Background Agroecological cropping systems are recognised as an alternative way to ensure the sustainability of cotton(Gossypium hirsutum L.) production in the context of climate change and degradation of soil fertili...Background Agroecological cropping systems are recognised as an alternative way to ensure the sustainability of cotton(Gossypium hirsutum L.) production in the context of climate change and degradation of soil fertility. A study was conducted in Benin from 2020 to 2023 to compare six different cotton cultivars in three agroecological cropping systems in two cotton-growing zones. Plough-based tillage plus incorporation of cover crop biomass(PTI), conservation agriculture with strip tillage(CA_ST), and conservation agriculture with no tillage(CA_NT) were compared with the reference plough-based tillage(PT). The objective was to identify morpho-physiological traits of cotton that increase yield in agroecological cropping systems. Our approach combined a field experiment and crop simulation model(CSM) of CROPGRO-Cotton to evaluate the effects of genotype(G) × environment(E) × management(M) interactions on seed cotton yield(SCY).Results Cultivars Tamcot_camde and Okp768 and simulated ideotypes performed best in CA systems. Increased seed mass, large and thick leaves, and later maturity were identified as beneficial for yield enhancement in CA systems. Cultivars and ideotypes that combine these traits also resulted in better nitrogen and water use efficiencies in CA systems. Under different climate scenarios up to 2050, ideotypes designed could increase SCY in Benin.Conclusion A set of morpho-physiological traits associated with vegetative vigour is required to ensure a good SCY in agroecological cropping systems. These results provide scientific evidence and useful knowledge for breeders and research programmes on cropping systems focused on the adaptation of cotton to climate change.展开更多
The general situation of planning and construction project for Agroecological parks in ecological corridor was introduced and its planning orientation or guiding ideology was also analyzed.Furthermore,countermeasures ...The general situation of planning and construction project for Agroecological parks in ecological corridor was introduced and its planning orientation or guiding ideology was also analyzed.Furthermore,countermeasures and suggestions for planning and construction of Agroecological parks in ecological corridor were proposed.展开更多
The prevailing farming system in Burkina Faso is smallholder agriculture based on cereal production, especially sorghum (Sorghum bicolor (L.) Moench) which form the staple diet for the population. Production is consta...The prevailing farming system in Burkina Faso is smallholder agriculture based on cereal production, especially sorghum (Sorghum bicolor (L.) Moench) which form the staple diet for the population. Production is constantly challenged by climate hazards, striga (Striga hermonthica (Del.) Benth.) infestation, inefficient farming practices and declining soil fertility. To address these concerns, one study on several agroecological techniques was conducted from 2013 to 2015 in a participative manner with more than 150 male and female farmers from four communities. Each farmer was asked to test out two or three agroecological techniques of his choice and to measure these new techniques against their usual farming practices. These techniques combined the use of organic fertilizer (5 t/ha) and/or mineral fertilizer (2 g/seed hole) with the systems of crop rotation and mixed cropping, in addition to the improved za? technique and the half-moon method. Plant material was composed of local landraces and improved varieties of sorghum, sesame and cowpea. On-farm application of agroecological techniques resulted in significantly increased sorghum production in all four communities. The rates of increase for grain yield were 8% for the half-moon fields and more than 130% for the rotation systems when compared to the farmers’ usual practices. More limited results were achieved with the chemical components of the soil after two years of experimentation. Only the soil’s organic matter showed improvement over the first year. This study shows that crop rotation, mixed cropping and the improved za? technique in combination with compost and improved drought-resistant varieties constitute agroecological strategies favorable to the intensification and diversification of farming systems in the studied locations. The farmers were above all impressed by the on-site management of compost by means of the za? technique which enabled large-scale fertilization of fields.展开更多
Based on former studies on weather simulator modules in IPMist laboratory, study on visual programming of stochastic weather generator(VS-WGEN)was continued. In this study, Markov Chain, Monte Carlo, Fourier Series, a...Based on former studies on weather simulator modules in IPMist laboratory, study on visual programming of stochastic weather generator(VS-WGEN)was continued. In this study, Markov Chain, Monte Carlo, Fourier Series, and weak stationary process were used to generate the daily weather data in software Matlab 6. 0, with the data input from 40 years' weather data recorded by Beijing Weather Station. The generated data includes daily maximum temperature, minimum temperature, precipitation and solar radiation. It has been verified that the weather data generated by the VS-WGEN were more accurate than that by the old WGEN, when twenty new model parameters were included. VS-WGEN has wide software applications, such as pest risk analysis, pest forecast and management. It can be implemented in hardware development as well, such as weather control in weather chamber and greenhouse for researches on ecological adaptation of crop varieties to a given location over time and space. Overall, VS-WGEN is a very useful tool for studies on theoretical and applied ecology.展开更多
Agroecological practices are promoted as a more proactive approach than conventional agriculture to achieving a collective global response to climate change and variability while building robust and resilient agricult...Agroecological practices are promoted as a more proactive approach than conventional agriculture to achieving a collective global response to climate change and variability while building robust and resilient agricultural systems to meet food needs and protect the integrity of ecosystems.There is relatively limited evidence on the key traditional agroecological knowledge and practices adopted by smallholder farmers,the factors that influence smallholder farmers’decision to adopt these practices,and the opportunities it presents for building resilient agricultural systems.Using a multi-scale mixed method approach,we conducted key informant interviews(n=12),focus group discussions(n=5),and questionnaire surveys(N=220)to explore the traditional agroecological knowledge and practices,the influencing factors,and the opportunities smallholder farmers presented for achieving resilient agricultural systems.Our findings suggest that smallholder farmers employ a suite of traditional agroecological knowledge and practices to enhance food security,combat climate change,and build resilient agricultural systems.The most important traditional agroecological knowledge and practices in the study area comprise cultivating leguminous crops,mixed crop-livestock systems,and crop rotation,with Relative Importance Index(RII)values of 0.710,0.708,and 0.695,respectively.It is reported that the choice of these practices by smallholder farmers is influenced by their own farming experience,access to market,access to local resources,information,and expertise,and the perceived risk of climate change.Moreover,the results further show that improving household food security and nutrition,improving soil quality,control of pest and disease infestation,and support from NonGovernmental Organizations(NGOs)and local authorities are opportunities for smallholder farmers in adopting traditional agroecological knowledge and practices for achieving resilient agricultural systems.The findings call into question the need for stakeholders and policy-makers at all levels to develop capacity and increase the awareness of traditional agroecological knowledge and practices as mechanisms to ensure resilient agricultural systems for sustainable food security.展开更多
Under the combined effect of both climatic and anthropogenic factors, agroecosystems and especially arable soils undergo a worrying and fast degradation in the Sudano-Sahelian zone of Western Africa threatening its so...Under the combined effect of both climatic and anthropogenic factors, agroecosystems and especially arable soils undergo a worrying and fast degradation in the Sudano-Sahelian zone of Western Africa threatening its socio-economic development. Food systems need to be better managed to be more resilient, to increase agricultural production, while conserving natural resources and biodiversity. Agroecological practices alternatively with traditional cultural techniques have been locally experimented to cope with local pedoclimatic constraints such as weak (low) soil fertility and climate change, increasing food demand and economic conditions. Our work aims at by taking stock of agroecological knowledge as well as the determinants of their adoption with small-scale farmers in Eastern Burkina Faso. A survey (48 farmers) was conducted in Sampieri (Kantchari district), and Logit model was used to determine equations for agroecological practices adoption. Results show that traditional production practices for millet-bean cultural systems are gradually being replaced by those of agroecological. In fact, 60.4% of producers have participated in at least one agroecological training session and 60.8% of producers are interested at least in one agroecological topic. The most adopted and practiced techniques were superficial plowing, stone-rows, zai and compost, single or in combination (60% of the producers). Determinants of these practices adoption were the increased crop yields, improved of producers’ incomes, the provision or otherwise of material and human resources and training. Additionally, variables such as training, possession of agricultural equipment were positively correlated to the adoption of agroecological practices while illiteracy impacts negatively and significantly this adoption. Moreover, agroecological practices had a significant effect on grain and straw yields of sorghum, thus confirming producers’ claims about the improvements in production observed following the adoption of these practices.展开更多
This article assesses the impacts of agroecological technologies adoption on the agricultural yields and incomes for millet and cowpea producers in Niger from both Maradi and Zinder regions. For this purpose, a set of...This article assesses the impacts of agroecological technologies adoption on the agricultural yields and incomes for millet and cowpea producers in Niger from both Maradi and Zinder regions. For this purpose, a set of descriptive statistics methods are applied to data collected from 1950 producers from 80 villages. Results indicate that the density of semi, HPK variety, compost and IT 90 variety are the most adopted agroecological technologies with respective adoption rates of 87%, 69%, 64.3% and 64%. Moreover, results show that millet producers that adopted agro-ecological technologies have on average multiplied by 2.00 and 2.96 times their production, in Zinder and Maradi regions respectively. Besides, findings reveal that cowpea producers that adopted agro-ecological technologies have on average multiplied by 2.00 and 3.21 times their production, in Zinder and Maradi regions respectively. Finally, results support that the improvement in millet and cowpea yields has led to increase in producers’ total income by 2 and 3 times respectively in Zinder and Maradi regions. Since agroecological technologies improve agricultural yields and income, we suggest policy makers to recommend their adoption and diffusion.展开更多
Background: Cardiovascular diseases such as hypertension (HTN) are one of the main causes of death in Cameroon. This study aimed at assessing prevalence disparities and determinants of hypertension amongst Bamilé...Background: Cardiovascular diseases such as hypertension (HTN) are one of the main causes of death in Cameroon. This study aimed at assessing prevalence disparities and determinants of hypertension amongst Bamiléké adults residing in two different agroecological zones of Cameroon. Methods: A cross-sectional and descriptive survey was conducted among Bamiléké population living in the Highlands zone (Western region) and in the Monomodal Rainforest zone (Littoral region) of Cameroon from August 2016 to August 2017. Participants (962) were aged at least 20 years old. Data on sociodemographic, hemodynamic, anthropometric, and biochemical parameters and lifestyle of the participants were collected. Results: Results obtained revealed that 34.2% were hypertensive and those residing in the highland zone were more affected than those living in the monomodal rainforest zone (44.5% vs 22.9%). The different subtypes of HTN (Isolated systolic hypertension (14.1%), isolated diastolic hypertension (7.2%) and Systo-diastolic hypertension (23.3%)) were also more prevalent in the Highlands Zone. The most prevalent stage of HTN was pre-HTN (31.5%). However, people living in the monomodal rainforest zone were more affected by pre-HTN compared to Bamiléké living in the highland zone (33.6% vs. 29.6%). Results also showed that high consumption (≥ 3 times/week) of carbohydrate- and fat-rich foods, ageing, obesity, and marital status were associated with high blood pressure in both agroecological zones. Besides, secondary education (OR = 0.68;95% CI: 0.42 - 0.99) in the Highlands Zone and high (≥3 times/week) vegetable consumption (OR = 0.66;95% CI: 0.44 - 0.98) in the Monomodal Rainforest Zone had a protective effect on elevated blood pressure of population. Conclusion: There is a disparity in the prevalence of hypertension and some of its determinants among Bamiléké adults residing in different agroecological zones. This work highlights the need to advocate for local and ethno-cultural health policies to prevent, diagnose and manage hypertension.展开更多
Microorganisms are key actors in soil quality.However,their activity is influenced by various factors including agricultural practices.This study aimed to assess the effects of 4 agroecological practices on soil micro...Microorganisms are key actors in soil quality.However,their activity is influenced by various factors including agricultural practices.This study aimed to assess the effects of 4 agroecological practices on soil microbiological activity in the Sudano-Sahelian area of Burkina Faso.These practices involved(a)the use of organic matter(OM)spread over a plot,with and without micro-dose mineral fertilization and(b)the localized application of organic manure in planting pits dug into hard pan land(zaï),with and without cereal-legume rotation.Microbial biomass(MB)by fumigation-extraction and soil respiration by incubation-extraction were measured on 40 soil samples,taken at 0-10 cm depth.The results indicated higher cumulative values of carbon from respiration on plots with generalized application of OM,with and without mineral fertilizers(113 and 111 mg C-CO_(2)/kg soil respectively),than on plots with localized application,with and without cereal-legume rotation(72.9 and 98 mg C-CO_(2)/kg soil respectively).MB follows the same trend as soil respiration with lower values(21.9 to 50.9 mg C/kg soil respectively).Generalized application of OM with or without mineral fertilizers was more favorable to soil microbial activity.展开更多
Dear Editors,Global maize yields are stagnating,with over 50% of China's growing areas experiencing yield plateaus(Gerber et al.,2024).Climate change significantly contributes to this stagnation(Tigchelaar et al.,...Dear Editors,Global maize yields are stagnating,with over 50% of China's growing areas experiencing yield plateaus(Gerber et al.,2024).Climate change significantly contributes to this stagnation(Tigchelaar et al.,2018;Rizzo et al.,2022).展开更多
Agriculture in West Africa faces multiple challenges,such as climate variabil-ity,soil degradation,and limited access to reliable agroecological information for agricultural planning.In this context,traditional zonati...Agriculture in West Africa faces multiple challenges,such as climate variabil-ity,soil degradation,and limited access to reliable agroecological information for agricultural planning.In this context,traditional zonation approaches have often relied solely on rainfall patterns,potentially overlooking critical bio-physical factors that influence agricultural productivity.This study presents a comprehensive agroecological zoning approach for Burkina Faso as a case study in West Africa,using multiple biophysical variables and k-means clus-tering analysis.The methodology integrates climate data from ERA5 reanaly-sis and TAMSAT satellite precipitation estimates,soil characteristics from the Harmonized World Soil Database,and derived agroclimatic indices for Burkina Faso for the period 1991-2020.Twelve variables,including precipitation,tem-perature,consecutive dry and wet days,onset and length of growing season,aridity index,and soil water content,were analyzed at 0.25˚×0.25˚spatial resolution.The k-means clustering analysis identified four distinct agroeco-logical zones(AEZs)with unique biophysical characteristics in Burkina Faso.The northern zone(AEZ1)exhibits semi-arid conditions,with longer dry spells and higher temperatures,while the southwestern zone(AEZ4)shows more favorable agricultural conditions with higher rainfall and longer grow-ing seasons.The transitional zones(AEZ2 and AEZ3)display intermediate characteristics reflecting gradual changes in agroclimatic conditions.Compar-ison with the well-known rainfall-based zonation using the V-measure frame-work yielded a score of 0.55,indicating that the new AEZs incorporate addi-tional biophysical factors resulting in more nuanced spatial differentiation for Burkina Faso.The methodology demonstrates the value of integrating multi-ple data sources and analytical approaches to better understand agricultural potential and constraints.This zonation provides a scientific basis for agricul-tural planning and policy development in Burkina Faso,with potential appli-cations in other regions in West Africa facing similar agricultural challenges.展开更多
Geohazards are a recurrent issue in the Kerio River catchment of Kenya, which usually results in life and property loss. This research focuses on mapping geo-hazard risk zones of the region. The risk zones were develo...Geohazards are a recurrent issue in the Kerio River catchment of Kenya, which usually results in life and property loss. This research focuses on mapping geo-hazard risk zones of the region. The risk zones were developed from a combination of land use land cover maps, agroecological zones maps and soil erosion maps using the Analytical Hierarchy Process method of multi-criteria analysis. The final results depict the geohazard risk maps which show the susceptibility of different areas in the catchment (classified as risk zones) to hazards. The zones range from no risk zones to very high-risk zones. The results showed that the lowlands are most susceptible to hazards as they were classified as high-risk zones. These risk zone areas have impacts on the socio-economic development hence negatively impacting livelihoods in the area.展开更多
In order to grasp the distribution of Aspergillus flavus in the soil of peanut production areas in China,A.flavus biomarkers were tested on 555 soil samples from 37 sampling points in 17 provinces,peanut fields in fou...In order to grasp the distribution of Aspergillus flavus in the soil of peanut production areas in China,A.flavus biomarkers were tested on 555 soil samples from 37 sampling points in 17 provinces,peanut fields in four agroecological zones(Southern area,Yangtze River Basin,Northern area,Northeast area).The results showed that(1)the cultivation amount of A.flavus per gram of soil in the Yangtze River Basin is 1.30 times that of the southern area,1.56 times that of the northern area,and 6.20 times that of the northeast area,with obvious regional characteristics.(2)In the Yangtze River basin,the change of longitude in the east-west direction has no direct impact on the cultivation amount of A.flavus per gram of soil.(3)In the east coast,the A.flavus cultivated per gram of soil increased first and then decreased with the increase of latitude from south to north.(4)A.flavus can be isolated in the soil samples above 1000 m.Field pollution is an important source of aflatoxin contamination in peanut.The study on the distribution of A.flavus in soil in China could provide theoretical support for the early warning and prevention and control measures of aflatoxin contamination in peanut.展开更多
An investigation to assess the spatial structure and severity of Pseudocercospora leaf and fruit spot disease (PLFSD) on citrus trees in cocoa-based agroforests was carried out in three contrasting ecological zones in...An investigation to assess the spatial structure and severity of Pseudocercospora leaf and fruit spot disease (PLFSD) on citrus trees in cocoa-based agroforests was carried out in three contrasting ecological zones in southern Cameroon, viz: 1) the humid forest zone, 2) the degraded forest zone, and 3) the forest-savannah transition zone. Two main parameters were investigated viz: 1) the spatial structure of cocoa based agroforests, and 2) the disease severity. In total, the spatial structure of 19 cocoa-based agroforests was analysed using the Ripley K(r) function, meanwhile the collection of epidemiological data that consisted of noting the presence of PLFSD spots on leaves and fruits on 438 citrus trees was used to characterise the severity of the disease. Results showed that, the spatial structure of citrus trees in these agroforests investigated were regular in seven plots, random in nine, and aggregated in three. Aggregated plots presented a significantly higher mean of disease severity on leaves and fruits (28.55 and 30.37 respectively), as compared to randomised (20.91 and 16.32 respectively) and regular plots (16.28 and 14.97 respectively), at P-value < 0.05. These results suggest that the spatial structure of citrus trees in the cocoa-based agroforests studied influences the severity of PFLSD. Proper integrated control measures can therefore be initiated, leading to a considerable reduction of the use of manufactured inputs, and thereby, the cost of production of citrus fruits.展开更多
This study aims to investigate the abundance of AMF according to soil properties and altitudes in different cacao plantations of Cameroon. Physico-chemical analyses were made on soil samples collected from three agro-...This study aims to investigate the abundance of AMF according to soil properties and altitudes in different cacao plantations of Cameroon. Physico-chemical analyses were made on soil samples collected from three agro-ecological zones. Soil samples were also used to evaluate directly the AMF abundance following the various altitudes and after trapping by sorghum plant. The results showed that soil properties, AMF spore abundances and colonization fluctuated significantly at different altitudes. The most represented texture was sandy loam. The bimodal zone presented a homogeneous texture (sandy loam) in all its localities. Cacao soil chemical characteristics showed that, the highest nitrogen rate (0.47%;p 0.05, Scott-Knott test) was recorded at Melong in a monomodal zone while Tonga in the Western highlands displayed the lowest rate (0.13%). Soil P concentration was significantly high in monomodal zones (Mbanga and Melong). Soil pH level indicated that the soil from Tonga in the Western highlands was neutral (pH = 6.67), and soils of other localities under study were acidic with the lowest (4.75) pH level recorded at Melong in a monomodal zone. In soil samples, the highest spore density (1.03 spores/g soil) was observed at Ntui in Bimodal zone, while the lowest spore density (0.26 spores/g soil) was observed at Bafang in the Western highlands. Root colonization showed that the sample from Bokito in a bimodal zone displayed the best frequency of mycorrhization (86.11%) while the sample from Bafang in the Western highlands recorded the lowest (27.11%). The PCA analysis highlighted that available phosphorus, pH and altitude all strongly correlated with AMF root colonization ability and can be used as a predictor of AMF colonization ability in cacao rhizosphere.展开更多
The study was conducted with the main objective to evaluate the genetic variability, heritability, and clustering pattern exploration of morphological and yield related traits in potato (Solanum tuberosum L.) collecti...The study was conducted with the main objective to evaluate the genetic variability, heritability, and clustering pattern exploration of morphological and yield related traits in potato (Solanum tuberosum L.) collections in the bimodal rainfall agroecological zone of Cameroon using a Randomized Complete Block Design (RCBD) with three replications. The data obtained on morphological and yield traits were subjected to analysis of variance (ANOVA). The results showed that the viability rate of the collections varied from 77.78% to 96.55% respectively for the Maffo and Desiree collections, while the greatest number of tubers per plant varied from 4 to 18 respectively for Synergie and Desiree. The emergence rate varies from 60% to 1.66% respectively for Maffo et Doza collections. However, Desiree presents the highest TL (96.55) while Maffo shows the lowest value (77.78%). The yield per hectare varied from 1.14 to 9.3 t/h for Maffo and Doza respectively. For all the characteristics observed, Phenotypic Coefficients of Variation (PCV) were higher than Genotypic Coefficients of Variation (GCV) suggesting the role of environment in the expression of traits under observation. The highest GCV and PCV 47.55 and 58.94 respectively were observed for Diameter at the collar (DC). Most of the traits showed high GAM (>20%)) except Average Tuber Length (ATL) with a moderate value (19.8). In terms of vegetative development, the Desiree variety showed the highest performance. Based on the growth and yield results, Doza seems to be the most recommendable crop in the study area.展开更多
Mycotoxins are one of the most dangerous chemical contaminants found in staple foods. Aflatoxins, a well-known mycotoxin, are mostly dangerous for both humans and livestock, according to the International Agency Cance...Mycotoxins are one of the most dangerous chemical contaminants found in staple foods. Aflatoxins, a well-known mycotoxin, are mostly dangerous for both humans and livestock, according to the International Agency Cancer for Research on Cancer. In this paper, the author aimed to establish a geographical distribution map of aflatoxins fungi producers on several food like maize, maize of popcorn, popcorm, fish, spices, cassava, mil, sorghum, peanut and voandzou from the eight (8) agroecological area in Benin. Several molds were isolated from these foods and morphologically characterized on malt extract agar. Among the fungi, 318 species isolated from four leading subspecies, A. flavus, A. parasiticus, A. nomius, and A. togoensis, belonging to the Aspergillus section Flavi, were identified. For molecular analysis, polymerase chain reaction (PCR) methods were used to amplify 1450 pb of the beta-tubulin gene, and their products were used to realize restruction fragment length polymorphisms (RFLPs) to identify genic characteristics. From this strain, three DNA fragments were identified as belonging to subspecies A. flavus, and four DNA fragments were classified as belonging to A. parasiticus. Furthermore, chemotaxonomic’s analysis was performed on all strains isolated by thin layer chromatography revealing variable levels of aflatoxin’s contamination in the samples. All feedstuffs from the eight agroecological areas in Benin were found to be contaminated by several molds, and their mycotoxins mainly comprised four types of aflatoxins: B1, B2, G1 and G2. This study revealed that the four agroecological areas in northern Benin are primarily contaminated by A. flavus and A. togoensis, producers of aflatoxins B1 and B2, whereas the four agroecological areas southern Benin are contaminated by A. parasiticus and A. nomius, producers of both sets of aflatoxins B1 and B2 and aflatoxins G1 and G2. This study can be used to protect public health from the risks associated with liver cancer.展开更多
Land use dynamics is a prerequisite for identifying natural resource management constraints,the evolution of agrarian practices and population growth.The objective of this research is to improve knowledge of the dynam...Land use dynamics is a prerequisite for identifying natural resource management constraints,the evolution of agrarian practices and population growth.The objective of this research is to improve knowledge of the dynamics of agricultural land use in the dryland(Cinzana)and cotton(Kléla)areas of Mali.The methodology used consisted of planimetric data collection and diachronic analysis using Landsat TM(Thematic Mapper)satellite images from 2000 and OLI(Operational Land Image)from 2020.Degradation and deforestation rates of natural formations were calculated on the one hand,and on the other hand,the speed and intensity of changes were evaluated using the Pontius matrix22 and intensity analysis programs from the transition matrix.The results of the diachronic analysis revealed a clear increase in the area of anthropogenic formations,especially fields and fallow land,at the expense of natural formations.In Cinzana,this was reflected in an overall increase in the area of anthropogenic formations of 45%(i.e.,2.30%per year)and an overall reduction of 45.15%(2.26%per year)in the area of natural units.In Kléla,there was an overall increase of 131%(i.e.,6.54%per year)in the area of fields and fallow land to the detriment of natural formations,which underwent a reduction of 95%(i.e.,4.76%per year)between 2000 and 2020.Definitely,the evolution of landscape units in the research area between 2000 and 2020 points to excessive anthropization of natural formations,which could compromise the sustainability of these formations,with a risk to ecosystem services and agricultural productivity lost.The study recommends the use of agro-ecological practices,and the facilitation of access to agricultural technologies and support services with a view to agricultural intensification.Policy measures to promote an agro-ecological transition should be encouraged.展开更多
Nowadays, China's social economy and the level of science and technology is improving day by day, the coordinated development of agricultural economy and ecological environment is an important content of China'...Nowadays, China's social economy and the level of science and technology is improving day by day, the coordinated development of agricultural economy and ecological environment is an important content of China's new rural construction. At present, the protection and development of agricultural ecological environment is the key to promote agricultural development. This paper also analyzes the current development situation of agricultural economy in China, and makes corresponding research on how to promote the coordinated development of agricultural ecological environment and agricultural economy.展开更多
The Honghe Hani Rice Terraces of Yunnan Province have become a national emblem for China and a UNESCO World Heritage Site,but some are beginning to crumble.This research attempts to address why this is happening and w...The Honghe Hani Rice Terraces of Yunnan Province have become a national emblem for China and a UNESCO World Heritage Site,but some are beginning to crumble.This research attempts to address why this is happening and what can be done about it.Previous work has failed to adequately address the possible shortcomings of recently introduced seed and water management technologies,their particular effect on rice terraces and the people who depend upon them.In an effort to better understand the issue,field observation was triangulated with in-depth interviews with local people,and the examination of scientific literature.To do this,the authors spent time in China with a translator in a key village known to be first in the area to truly succeed in carving the rice terraces and in making the mountain slope irrigation system required actually working.Results validated by experts in each field indicate that while the new seed and technologies do save water and improve lives,paired with migration,they may also be threatening the long-term viability of rice terracing in the region.The authors conclude that an integrated approach is needed and put forward a strategic blueprint to reinforce ecological,social and economic longevity.They also call for more research into the applicability of these resilience measures in other hybrid rice terracing regions,such as in the Philippines and Vietnam.展开更多
基金supported by the Benin Cotton Research Institute (IRC)the Cotton Interprofessional Association (AIC)+1 种基金the French Agricultural Research Centre for International Development (CIRAD)the TAZCO_(2) project (Transition Agroécologique des Zones Cotonnières du Bénin),which is funded by the Republic of Benin and the French Development Agency (AFD)。
文摘Background Agroecological cropping systems are recognised as an alternative way to ensure the sustainability of cotton(Gossypium hirsutum L.) production in the context of climate change and degradation of soil fertility. A study was conducted in Benin from 2020 to 2023 to compare six different cotton cultivars in three agroecological cropping systems in two cotton-growing zones. Plough-based tillage plus incorporation of cover crop biomass(PTI), conservation agriculture with strip tillage(CA_ST), and conservation agriculture with no tillage(CA_NT) were compared with the reference plough-based tillage(PT). The objective was to identify morpho-physiological traits of cotton that increase yield in agroecological cropping systems. Our approach combined a field experiment and crop simulation model(CSM) of CROPGRO-Cotton to evaluate the effects of genotype(G) × environment(E) × management(M) interactions on seed cotton yield(SCY).Results Cultivars Tamcot_camde and Okp768 and simulated ideotypes performed best in CA systems. Increased seed mass, large and thick leaves, and later maturity were identified as beneficial for yield enhancement in CA systems. Cultivars and ideotypes that combine these traits also resulted in better nitrogen and water use efficiencies in CA systems. Under different climate scenarios up to 2050, ideotypes designed could increase SCY in Benin.Conclusion A set of morpho-physiological traits associated with vegetative vigour is required to ensure a good SCY in agroecological cropping systems. These results provide scientific evidence and useful knowledge for breeders and research programmes on cropping systems focused on the adaptation of cotton to climate change.
文摘The general situation of planning and construction project for Agroecological parks in ecological corridor was introduced and its planning orientation or guiding ideology was also analyzed.Furthermore,countermeasures and suggestions for planning and construction of Agroecological parks in ecological corridor were proposed.
文摘The prevailing farming system in Burkina Faso is smallholder agriculture based on cereal production, especially sorghum (Sorghum bicolor (L.) Moench) which form the staple diet for the population. Production is constantly challenged by climate hazards, striga (Striga hermonthica (Del.) Benth.) infestation, inefficient farming practices and declining soil fertility. To address these concerns, one study on several agroecological techniques was conducted from 2013 to 2015 in a participative manner with more than 150 male and female farmers from four communities. Each farmer was asked to test out two or three agroecological techniques of his choice and to measure these new techniques against their usual farming practices. These techniques combined the use of organic fertilizer (5 t/ha) and/or mineral fertilizer (2 g/seed hole) with the systems of crop rotation and mixed cropping, in addition to the improved za? technique and the half-moon method. Plant material was composed of local landraces and improved varieties of sorghum, sesame and cowpea. On-farm application of agroecological techniques resulted in significantly increased sorghum production in all four communities. The rates of increase for grain yield were 8% for the half-moon fields and more than 130% for the rotation systems when compared to the farmers’ usual practices. More limited results were achieved with the chemical components of the soil after two years of experimentation. Only the soil’s organic matter showed improvement over the first year. This study shows that crop rotation, mixed cropping and the improved za? technique in combination with compost and improved drought-resistant varieties constitute agroecological strategies favorable to the intensification and diversification of farming systems in the studied locations. The farmers were above all impressed by the on-site management of compost by means of the za? technique which enabled large-scale fertilization of fields.
基金supported jointly by the grant of Project“973”:Fundamental Studies on Invasion and Control of Extra Pest(2002CB111400)the grant of Key Project of Ministry of Science and Technology of China:Development of New Technologies for Pest Forecasting(2001BA50PB01).
文摘Based on former studies on weather simulator modules in IPMist laboratory, study on visual programming of stochastic weather generator(VS-WGEN)was continued. In this study, Markov Chain, Monte Carlo, Fourier Series, and weak stationary process were used to generate the daily weather data in software Matlab 6. 0, with the data input from 40 years' weather data recorded by Beijing Weather Station. The generated data includes daily maximum temperature, minimum temperature, precipitation and solar radiation. It has been verified that the weather data generated by the VS-WGEN were more accurate than that by the old WGEN, when twenty new model parameters were included. VS-WGEN has wide software applications, such as pest risk analysis, pest forecast and management. It can be implemented in hardware development as well, such as weather control in weather chamber and greenhouse for researches on ecological adaptation of crop varieties to a given location over time and space. Overall, VS-WGEN is a very useful tool for studies on theoretical and applied ecology.
文摘Agroecological practices are promoted as a more proactive approach than conventional agriculture to achieving a collective global response to climate change and variability while building robust and resilient agricultural systems to meet food needs and protect the integrity of ecosystems.There is relatively limited evidence on the key traditional agroecological knowledge and practices adopted by smallholder farmers,the factors that influence smallholder farmers’decision to adopt these practices,and the opportunities it presents for building resilient agricultural systems.Using a multi-scale mixed method approach,we conducted key informant interviews(n=12),focus group discussions(n=5),and questionnaire surveys(N=220)to explore the traditional agroecological knowledge and practices,the influencing factors,and the opportunities smallholder farmers presented for achieving resilient agricultural systems.Our findings suggest that smallholder farmers employ a suite of traditional agroecological knowledge and practices to enhance food security,combat climate change,and build resilient agricultural systems.The most important traditional agroecological knowledge and practices in the study area comprise cultivating leguminous crops,mixed crop-livestock systems,and crop rotation,with Relative Importance Index(RII)values of 0.710,0.708,and 0.695,respectively.It is reported that the choice of these practices by smallholder farmers is influenced by their own farming experience,access to market,access to local resources,information,and expertise,and the perceived risk of climate change.Moreover,the results further show that improving household food security and nutrition,improving soil quality,control of pest and disease infestation,and support from NonGovernmental Organizations(NGOs)and local authorities are opportunities for smallholder farmers in adopting traditional agroecological knowledge and practices for achieving resilient agricultural systems.The findings call into question the need for stakeholders and policy-makers at all levels to develop capacity and increase the awareness of traditional agroecological knowledge and practices as mechanisms to ensure resilient agricultural systems for sustainable food security.
文摘Under the combined effect of both climatic and anthropogenic factors, agroecosystems and especially arable soils undergo a worrying and fast degradation in the Sudano-Sahelian zone of Western Africa threatening its socio-economic development. Food systems need to be better managed to be more resilient, to increase agricultural production, while conserving natural resources and biodiversity. Agroecological practices alternatively with traditional cultural techniques have been locally experimented to cope with local pedoclimatic constraints such as weak (low) soil fertility and climate change, increasing food demand and economic conditions. Our work aims at by taking stock of agroecological knowledge as well as the determinants of their adoption with small-scale farmers in Eastern Burkina Faso. A survey (48 farmers) was conducted in Sampieri (Kantchari district), and Logit model was used to determine equations for agroecological practices adoption. Results show that traditional production practices for millet-bean cultural systems are gradually being replaced by those of agroecological. In fact, 60.4% of producers have participated in at least one agroecological training session and 60.8% of producers are interested at least in one agroecological topic. The most adopted and practiced techniques were superficial plowing, stone-rows, zai and compost, single or in combination (60% of the producers). Determinants of these practices adoption were the increased crop yields, improved of producers’ incomes, the provision or otherwise of material and human resources and training. Additionally, variables such as training, possession of agricultural equipment were positively correlated to the adoption of agroecological practices while illiteracy impacts negatively and significantly this adoption. Moreover, agroecological practices had a significant effect on grain and straw yields of sorghum, thus confirming producers’ claims about the improvements in production observed following the adoption of these practices.
文摘This article assesses the impacts of agroecological technologies adoption on the agricultural yields and incomes for millet and cowpea producers in Niger from both Maradi and Zinder regions. For this purpose, a set of descriptive statistics methods are applied to data collected from 1950 producers from 80 villages. Results indicate that the density of semi, HPK variety, compost and IT 90 variety are the most adopted agroecological technologies with respective adoption rates of 87%, 69%, 64.3% and 64%. Moreover, results show that millet producers that adopted agro-ecological technologies have on average multiplied by 2.00 and 2.96 times their production, in Zinder and Maradi regions respectively. Besides, findings reveal that cowpea producers that adopted agro-ecological technologies have on average multiplied by 2.00 and 3.21 times their production, in Zinder and Maradi regions respectively. Finally, results support that the improvement in millet and cowpea yields has led to increase in producers’ total income by 2 and 3 times respectively in Zinder and Maradi regions. Since agroecological technologies improve agricultural yields and income, we suggest policy makers to recommend their adoption and diffusion.
文摘Background: Cardiovascular diseases such as hypertension (HTN) are one of the main causes of death in Cameroon. This study aimed at assessing prevalence disparities and determinants of hypertension amongst Bamiléké adults residing in two different agroecological zones of Cameroon. Methods: A cross-sectional and descriptive survey was conducted among Bamiléké population living in the Highlands zone (Western region) and in the Monomodal Rainforest zone (Littoral region) of Cameroon from August 2016 to August 2017. Participants (962) were aged at least 20 years old. Data on sociodemographic, hemodynamic, anthropometric, and biochemical parameters and lifestyle of the participants were collected. Results: Results obtained revealed that 34.2% were hypertensive and those residing in the highland zone were more affected than those living in the monomodal rainforest zone (44.5% vs 22.9%). The different subtypes of HTN (Isolated systolic hypertension (14.1%), isolated diastolic hypertension (7.2%) and Systo-diastolic hypertension (23.3%)) were also more prevalent in the Highlands Zone. The most prevalent stage of HTN was pre-HTN (31.5%). However, people living in the monomodal rainforest zone were more affected by pre-HTN compared to Bamiléké living in the highland zone (33.6% vs. 29.6%). Results also showed that high consumption (≥ 3 times/week) of carbohydrate- and fat-rich foods, ageing, obesity, and marital status were associated with high blood pressure in both agroecological zones. Besides, secondary education (OR = 0.68;95% CI: 0.42 - 0.99) in the Highlands Zone and high (≥3 times/week) vegetable consumption (OR = 0.66;95% CI: 0.44 - 0.98) in the Monomodal Rainforest Zone had a protective effect on elevated blood pressure of population. Conclusion: There is a disparity in the prevalence of hypertension and some of its determinants among Bamiléké adults residing in different agroecological zones. This work highlights the need to advocate for local and ethno-cultural health policies to prevent, diagnose and manage hypertension.
文摘Microorganisms are key actors in soil quality.However,their activity is influenced by various factors including agricultural practices.This study aimed to assess the effects of 4 agroecological practices on soil microbiological activity in the Sudano-Sahelian area of Burkina Faso.These practices involved(a)the use of organic matter(OM)spread over a plot,with and without micro-dose mineral fertilization and(b)the localized application of organic manure in planting pits dug into hard pan land(zaï),with and without cereal-legume rotation.Microbial biomass(MB)by fumigation-extraction and soil respiration by incubation-extraction were measured on 40 soil samples,taken at 0-10 cm depth.The results indicated higher cumulative values of carbon from respiration on plots with generalized application of OM,with and without mineral fertilizers(113 and 111 mg C-CO_(2)/kg soil respectively),than on plots with localized application,with and without cereal-legume rotation(72.9 and 98 mg C-CO_(2)/kg soil respectively).MB follows the same trend as soil respiration with lower values(21.9 to 50.9 mg C/kg soil respectively).Generalized application of OM with or without mineral fertilizers was more favorable to soil microbial activity.
基金supported by the National Key R&D Program of China(2021YFD1201300)the Major Science and Technology Projects in Biological Breeding(2023ZD04067)the Fundamental Research Funds for the Central Universities(2662025JGPY003).
文摘Dear Editors,Global maize yields are stagnating,with over 50% of China's growing areas experiencing yield plateaus(Gerber et al.,2024).Climate change significantly contributes to this stagnation(Tigchelaar et al.,2018;Rizzo et al.,2022).
基金funded by the German Federal Ministry of Education and Research(BMBF)research project CONCERT(grant number 01LG2101A) through the West African Science Center for Climate Change and Adapted Land Use(WASCAL)The authors gratefully acknowledge the European Centre for Medium-Range Weather Forecasts(ECMWF)for providing open access to ERA5 reanalysis data through the Copernicus Climate Change Service(C3S),and the University of Reading for making TAMSAT data freely available to the scientific community.
文摘Agriculture in West Africa faces multiple challenges,such as climate variabil-ity,soil degradation,and limited access to reliable agroecological information for agricultural planning.In this context,traditional zonation approaches have often relied solely on rainfall patterns,potentially overlooking critical bio-physical factors that influence agricultural productivity.This study presents a comprehensive agroecological zoning approach for Burkina Faso as a case study in West Africa,using multiple biophysical variables and k-means clus-tering analysis.The methodology integrates climate data from ERA5 reanaly-sis and TAMSAT satellite precipitation estimates,soil characteristics from the Harmonized World Soil Database,and derived agroclimatic indices for Burkina Faso for the period 1991-2020.Twelve variables,including precipitation,tem-perature,consecutive dry and wet days,onset and length of growing season,aridity index,and soil water content,were analyzed at 0.25˚×0.25˚spatial resolution.The k-means clustering analysis identified four distinct agroeco-logical zones(AEZs)with unique biophysical characteristics in Burkina Faso.The northern zone(AEZ1)exhibits semi-arid conditions,with longer dry spells and higher temperatures,while the southwestern zone(AEZ4)shows more favorable agricultural conditions with higher rainfall and longer grow-ing seasons.The transitional zones(AEZ2 and AEZ3)display intermediate characteristics reflecting gradual changes in agroclimatic conditions.Compar-ison with the well-known rainfall-based zonation using the V-measure frame-work yielded a score of 0.55,indicating that the new AEZs incorporate addi-tional biophysical factors resulting in more nuanced spatial differentiation for Burkina Faso.The methodology demonstrates the value of integrating multi-ple data sources and analytical approaches to better understand agricultural potential and constraints.This zonation provides a scientific basis for agricul-tural planning and policy development in Burkina Faso,with potential appli-cations in other regions in West Africa facing similar agricultural challenges.
文摘Geohazards are a recurrent issue in the Kerio River catchment of Kenya, which usually results in life and property loss. This research focuses on mapping geo-hazard risk zones of the region. The risk zones were developed from a combination of land use land cover maps, agroecological zones maps and soil erosion maps using the Analytical Hierarchy Process method of multi-criteria analysis. The final results depict the geohazard risk maps which show the susceptibility of different areas in the catchment (classified as risk zones) to hazards. The zones range from no risk zones to very high-risk zones. The results showed that the lowlands are most susceptible to hazards as they were classified as high-risk zones. These risk zone areas have impacts on the socio-economic development hence negatively impacting livelihoods in the area.
基金the National Key R&D Program of China(2022YFF1100702)Major project of Hubei Hongshan Laboratory(2021hszd015),National Natural Sciences Foundation of China(32030085,U22A20551)+1 种基金Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(CAASASTIP-2021-OCRI)Knowledge Innovation Program of Wuhan-Shuguang Project(3570).
文摘In order to grasp the distribution of Aspergillus flavus in the soil of peanut production areas in China,A.flavus biomarkers were tested on 555 soil samples from 37 sampling points in 17 provinces,peanut fields in four agroecological zones(Southern area,Yangtze River Basin,Northern area,Northeast area).The results showed that(1)the cultivation amount of A.flavus per gram of soil in the Yangtze River Basin is 1.30 times that of the southern area,1.56 times that of the northern area,and 6.20 times that of the northeast area,with obvious regional characteristics.(2)In the Yangtze River basin,the change of longitude in the east-west direction has no direct impact on the cultivation amount of A.flavus per gram of soil.(3)In the east coast,the A.flavus cultivated per gram of soil increased first and then decreased with the increase of latitude from south to north.(4)A.flavus can be isolated in the soil samples above 1000 m.Field pollution is an important source of aflatoxin contamination in peanut.The study on the distribution of A.flavus in soil in China could provide theoretical support for the early warning and prevention and control measures of aflatoxin contamination in peanut.
文摘An investigation to assess the spatial structure and severity of Pseudocercospora leaf and fruit spot disease (PLFSD) on citrus trees in cocoa-based agroforests was carried out in three contrasting ecological zones in southern Cameroon, viz: 1) the humid forest zone, 2) the degraded forest zone, and 3) the forest-savannah transition zone. Two main parameters were investigated viz: 1) the spatial structure of cocoa based agroforests, and 2) the disease severity. In total, the spatial structure of 19 cocoa-based agroforests was analysed using the Ripley K(r) function, meanwhile the collection of epidemiological data that consisted of noting the presence of PLFSD spots on leaves and fruits on 438 citrus trees was used to characterise the severity of the disease. Results showed that, the spatial structure of citrus trees in these agroforests investigated were regular in seven plots, random in nine, and aggregated in three. Aggregated plots presented a significantly higher mean of disease severity on leaves and fruits (28.55 and 30.37 respectively), as compared to randomised (20.91 and 16.32 respectively) and regular plots (16.28 and 14.97 respectively), at P-value < 0.05. These results suggest that the spatial structure of citrus trees in the cocoa-based agroforests studied influences the severity of PFLSD. Proper integrated control measures can therefore be initiated, leading to a considerable reduction of the use of manufactured inputs, and thereby, the cost of production of citrus fruits.
文摘This study aims to investigate the abundance of AMF according to soil properties and altitudes in different cacao plantations of Cameroon. Physico-chemical analyses were made on soil samples collected from three agro-ecological zones. Soil samples were also used to evaluate directly the AMF abundance following the various altitudes and after trapping by sorghum plant. The results showed that soil properties, AMF spore abundances and colonization fluctuated significantly at different altitudes. The most represented texture was sandy loam. The bimodal zone presented a homogeneous texture (sandy loam) in all its localities. Cacao soil chemical characteristics showed that, the highest nitrogen rate (0.47%;p 0.05, Scott-Knott test) was recorded at Melong in a monomodal zone while Tonga in the Western highlands displayed the lowest rate (0.13%). Soil P concentration was significantly high in monomodal zones (Mbanga and Melong). Soil pH level indicated that the soil from Tonga in the Western highlands was neutral (pH = 6.67), and soils of other localities under study were acidic with the lowest (4.75) pH level recorded at Melong in a monomodal zone. In soil samples, the highest spore density (1.03 spores/g soil) was observed at Ntui in Bimodal zone, while the lowest spore density (0.26 spores/g soil) was observed at Bafang in the Western highlands. Root colonization showed that the sample from Bokito in a bimodal zone displayed the best frequency of mycorrhization (86.11%) while the sample from Bafang in the Western highlands recorded the lowest (27.11%). The PCA analysis highlighted that available phosphorus, pH and altitude all strongly correlated with AMF root colonization ability and can be used as a predictor of AMF colonization ability in cacao rhizosphere.
文摘The study was conducted with the main objective to evaluate the genetic variability, heritability, and clustering pattern exploration of morphological and yield related traits in potato (Solanum tuberosum L.) collections in the bimodal rainfall agroecological zone of Cameroon using a Randomized Complete Block Design (RCBD) with three replications. The data obtained on morphological and yield traits were subjected to analysis of variance (ANOVA). The results showed that the viability rate of the collections varied from 77.78% to 96.55% respectively for the Maffo and Desiree collections, while the greatest number of tubers per plant varied from 4 to 18 respectively for Synergie and Desiree. The emergence rate varies from 60% to 1.66% respectively for Maffo et Doza collections. However, Desiree presents the highest TL (96.55) while Maffo shows the lowest value (77.78%). The yield per hectare varied from 1.14 to 9.3 t/h for Maffo and Doza respectively. For all the characteristics observed, Phenotypic Coefficients of Variation (PCV) were higher than Genotypic Coefficients of Variation (GCV) suggesting the role of environment in the expression of traits under observation. The highest GCV and PCV 47.55 and 58.94 respectively were observed for Diameter at the collar (DC). Most of the traits showed high GAM (>20%)) except Average Tuber Length (ATL) with a moderate value (19.8). In terms of vegetative development, the Desiree variety showed the highest performance. Based on the growth and yield results, Doza seems to be the most recommendable crop in the study area.
文摘Mycotoxins are one of the most dangerous chemical contaminants found in staple foods. Aflatoxins, a well-known mycotoxin, are mostly dangerous for both humans and livestock, according to the International Agency Cancer for Research on Cancer. In this paper, the author aimed to establish a geographical distribution map of aflatoxins fungi producers on several food like maize, maize of popcorn, popcorm, fish, spices, cassava, mil, sorghum, peanut and voandzou from the eight (8) agroecological area in Benin. Several molds were isolated from these foods and morphologically characterized on malt extract agar. Among the fungi, 318 species isolated from four leading subspecies, A. flavus, A. parasiticus, A. nomius, and A. togoensis, belonging to the Aspergillus section Flavi, were identified. For molecular analysis, polymerase chain reaction (PCR) methods were used to amplify 1450 pb of the beta-tubulin gene, and their products were used to realize restruction fragment length polymorphisms (RFLPs) to identify genic characteristics. From this strain, three DNA fragments were identified as belonging to subspecies A. flavus, and four DNA fragments were classified as belonging to A. parasiticus. Furthermore, chemotaxonomic’s analysis was performed on all strains isolated by thin layer chromatography revealing variable levels of aflatoxin’s contamination in the samples. All feedstuffs from the eight agroecological areas in Benin were found to be contaminated by several molds, and their mycotoxins mainly comprised four types of aflatoxins: B1, B2, G1 and G2. This study revealed that the four agroecological areas in northern Benin are primarily contaminated by A. flavus and A. togoensis, producers of aflatoxins B1 and B2, whereas the four agroecological areas southern Benin are contaminated by A. parasiticus and A. nomius, producers of both sets of aflatoxins B1 and B2 and aflatoxins G1 and G2. This study can be used to protect public health from the risks associated with liver cancer.
文摘Land use dynamics is a prerequisite for identifying natural resource management constraints,the evolution of agrarian practices and population growth.The objective of this research is to improve knowledge of the dynamics of agricultural land use in the dryland(Cinzana)and cotton(Kléla)areas of Mali.The methodology used consisted of planimetric data collection and diachronic analysis using Landsat TM(Thematic Mapper)satellite images from 2000 and OLI(Operational Land Image)from 2020.Degradation and deforestation rates of natural formations were calculated on the one hand,and on the other hand,the speed and intensity of changes were evaluated using the Pontius matrix22 and intensity analysis programs from the transition matrix.The results of the diachronic analysis revealed a clear increase in the area of anthropogenic formations,especially fields and fallow land,at the expense of natural formations.In Cinzana,this was reflected in an overall increase in the area of anthropogenic formations of 45%(i.e.,2.30%per year)and an overall reduction of 45.15%(2.26%per year)in the area of natural units.In Kléla,there was an overall increase of 131%(i.e.,6.54%per year)in the area of fields and fallow land to the detriment of natural formations,which underwent a reduction of 95%(i.e.,4.76%per year)between 2000 and 2020.Definitely,the evolution of landscape units in the research area between 2000 and 2020 points to excessive anthropization of natural formations,which could compromise the sustainability of these formations,with a risk to ecosystem services and agricultural productivity lost.The study recommends the use of agro-ecological practices,and the facilitation of access to agricultural technologies and support services with a view to agricultural intensification.Policy measures to promote an agro-ecological transition should be encouraged.
文摘Nowadays, China's social economy and the level of science and technology is improving day by day, the coordinated development of agricultural economy and ecological environment is an important content of China's new rural construction. At present, the protection and development of agricultural ecological environment is the key to promote agricultural development. This paper also analyzes the current development situation of agricultural economy in China, and makes corresponding research on how to promote the coordinated development of agricultural ecological environment and agricultural economy.
文摘The Honghe Hani Rice Terraces of Yunnan Province have become a national emblem for China and a UNESCO World Heritage Site,but some are beginning to crumble.This research attempts to address why this is happening and what can be done about it.Previous work has failed to adequately address the possible shortcomings of recently introduced seed and water management technologies,their particular effect on rice terraces and the people who depend upon them.In an effort to better understand the issue,field observation was triangulated with in-depth interviews with local people,and the examination of scientific literature.To do this,the authors spent time in China with a translator in a key village known to be first in the area to truly succeed in carving the rice terraces and in making the mountain slope irrigation system required actually working.Results validated by experts in each field indicate that while the new seed and technologies do save water and improve lives,paired with migration,they may also be threatening the long-term viability of rice terracing in the region.The authors conclude that an integrated approach is needed and put forward a strategic blueprint to reinforce ecological,social and economic longevity.They also call for more research into the applicability of these resilience measures in other hybrid rice terracing regions,such as in the Philippines and Vietnam.
