The effects of micro-ridge-furrow planting(MR)on yield and the efficiency of light,water,and thermal resource use in rapeseed were tested in a three-year field experiment comparing MR to conventional flat planting.MR ...The effects of micro-ridge-furrow planting(MR)on yield and the efficiency of light,water,and thermal resource use in rapeseed were tested in a three-year field experiment comparing MR to conventional flat planting.MR enhanced canopy heterogeneity by altering the leaf angle between plants on ridges and furrows.The heterogeneous canopy environment increased intercepted photosynthetic active radiation,alleviated canopy temperature stress,and optimized canopy humidity,leading to improvements in light-nitrogen matching and net photosynthetic rate.Consequently,dry matter and yield increased by 13.0%and 11.0%,respectively,while radiation,thermal,and precipitation utilization efficiency increased by 12.3%-16.2%.The corresponding improvements in yield and resource use efficiency were attributed to a heterogeneous canopy environment that improved microclimatic conditions.展开更多
Purpose–This study is dedicated to systematically collating the distribution and utilization circumstances of geothermal resources in China.Moreover,it endeavors to formulate a comprehensive utilization scheme for ge...Purpose–This study is dedicated to systematically collating the distribution and utilization circumstances of geothermal resources in China.Moreover,it endeavors to formulate a comprehensive utilization scheme for geothermal resources during the construction and operation phases of the railway,thereby furnishing robust support and valuable reference for the holistic utilization of geothermal resources along the railway corridor.Design/methodology/approach–Through an in-depth analysis of the extant utilization of geothermal resources in China,it is discerned that the current utilization modalities are relatively rudimentary,bereft of rational planning and characterized by a low utilization rate.Concurrently,by integrating the practical requisites of railway construction and operation and conducting theoretical dissections,a comprehensive utilization plan for the construction and operation periods of railway is proffered.Findings–In light of the railway’s construction and operation characteristics,geothermal utilization models are categorized.During construction,comprehensive modalities include tunnel illumination power generation,construction area heating,tunnel antifreeze using shallow geothermal energy,tunnel pavement antifreeze and construction concrete maintenance.During operation,they comprise operation tunnel antifreeze,railway roadbed antifreeze,railway switch snow melting and deicing,geothermal power station establishment and railway hot spring health tourism planning.Originality/value–According to the characteristics and actual needs of railway construction and operation,it is of great significance to rationally utilize geothermal resources to promote the construction and operation of green railways.展开更多
The resource utilization of sludge can effectively achieve the regeneration and utilization of resources,and promote sustainable economic development.Sludge carbonization is a sludge treatment and disposal technology ...The resource utilization of sludge can effectively achieve the regeneration and utilization of resources,and promote sustainable economic development.Sludge carbonization is a sludge treatment and disposal technology with broad application prospects,and its products have shown significant resource potential in land use,fuel utilization,and other fields.At present,China still faces some challenges in the resource utilization of sludge carbonization,such as issues related to heavy metal stability and outdated standards.In the future,it is necessary to further strengthen research,improve the standard system,and promote the widespread application of sludge carbonization technology,so as to achieve the goals of sludge reduction,harmlessness,and resource utilization and support the development of circular economy.展开更多
[Objectives] To evaluate the utilization and application value of vine plant resources,and enrich the urban vertical greening landscape.[Methods] Route survey and sample plot observation methods were employed to inves...[Objectives] To evaluate the utilization and application value of vine plant resources,and enrich the urban vertical greening landscape.[Methods] Route survey and sample plot observation methods were employed to investigate 96 greening sites in Shenyang area,China.[Results] There are 21 species of vines used in vertical greening,including 15 species of woody vines and 6 species of herbaceous vines.According to the biological characteristics of vine plants and the actual needs of vertical application in landscape greening,a comprehensive evaluation system with one target layer,three criterion layers and a total of 14 indicators was constructed,and the application value of 21 species of vines was evaluated.Based on the comprehensive evaluation value,the vine plants were divided into four grades,and four of them had good application prospects and could be used in urban vertical greening.[Conclusions] The evaluation model and evaluation results will provide a theoretical basis for the rational use of vine plant resources.展开更多
Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly...Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly managed or over-applied.This paper analyzes the existing challenges in the utilization of livestock manure,focusing on source control,process management,and end-use treatment.To address these issues,it proposes establishing a sustainable long-term mechanism.Key recommendations include enhancing source control,strengthening policy support to alleviate the financial burden on enterprises,aligning with market demands,intensifying the promotion of technologies and equipment development,and improving manure quality.In addition,advocating for grain-efficient animal husbandry and promoting diversified utilization through bio-chain approaches are essential.展开更多
State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The la...State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The laboratory was reconstructed based on former State Key Laboratory of Baiyun Obo Rare Earth Resources Researches and Comprehensive Utilization.展开更多
Membrane technology has thus far played an essential role in promoting environmental sustainability through improving the quality of water.Taking into account the current growth rate of membrane products along with th...Membrane technology has thus far played an essential role in promoting environmental sustainability through improving the quality of water.Taking into account the current growth rate of membrane products along with the market capacity,a tremendous rise in the amount of end-of-life(EoL)membranes is inevitable.In 2022,the global records of EoL membranes reached 35,000 tons.Recycling and resource utilization of EoL membranes is a viable option and hold significant promises for energy conservation and carbon neutralization.The present work provides an extensive overview of the latest progress in the field in relation with the prominent application cases.Furthermore,the avenues for the contributions of membrane recycling treatment technology within the framework of“carbon neutrality”are discussed with emphasis on permeability,pollutant interception capacity,and other relevant factors associated with the recycled membranes.This review strives to summarize the recycling and efficient utilization of EoL membranes,aiming at providing technical support to reduce operational costs and promote the low-carbon development of membrane technology.展开更多
This paper investigated and analyzed the conservation and utilization of four local livestock breeds in Binzhou City:Wadi Sheep,Bohai Black Cattle,Wudi Donkey,and Lubei White Goat.Shortcomings in the protection and ut...This paper investigated and analyzed the conservation and utilization of four local livestock breeds in Binzhou City:Wadi Sheep,Bohai Black Cattle,Wudi Donkey,and Lubei White Goat.Shortcomings in the protection and utilization of local germplasm resources were pointed out,and strategies and recommendations were proposed to promote high-quality development of livestock and poultry genetic resources in Binzhou,including building a solid germplasm foundation,standardizing production,and driving innovation.This paper provides references for the conservation,development,and utilization of local genetic resources in Binzhou City.展开更多
State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.
State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The la...State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The laboratory was reconstructed based on former State Key Laboratory of Baiyun Obo Rare Earth Resources Researches and Comprehensive Utilization.展开更多
This study aims to explore the potential of using a blended pulp from Mikania micrantha(M.micrantha)and waste paper for producing composite paper.The effects of the mass ratio of M.micrantha stem to waste paper(MRMW),...This study aims to explore the potential of using a blended pulp from Mikania micrantha(M.micrantha)and waste paper for producing composite paper.The effects of the mass ratio of M.micrantha stem to waste paper(MRMW),the beating time(BT),the water-to-pulp mass ratio(WPMR)and the times of pulp suspension screening(TPSS)on the paper’s basic structural,optical and mechanical properties are investigated.It is found that MRMW primarily affects the grammage(mass per unit area),density,bulkness and whiteness;WPMR mainly affects the thickness and density;TPSS mainly affects the thickness and grammage.When MRMW is 3:7,the composite paper shows higher values for thickness,grammage,density and whiteness;whereas when MRMW is 7:3,these values are lower.Extending BT can increase paper density.The tensile strengths of all prepared samples fall in the range of 1.5 to 4.1 kN/m,indicating their excellent strength properties that meet the demands of many paper applications.The artistic bags and lampshades crafted from this composite paper exhibit a more natural texture compared to conventional packaging paper.This research demonstrates the feasibility of papermaking by using M.micrantha,while showcasing the potential for synergistic integration of waste resources with traditional hand papermaking techniques.展开更多
With the extending scale of agricultural production,the treatment and utilization of waste have become increasingly serious environmental problem.Taking city garden and Zhongnan pasture in Pujiang Town of Minhang Dist...With the extending scale of agricultural production,the treatment and utilization of waste have become increasingly serious environmental problem.Taking city garden and Zhongnan pasture in Pujiang Town of Minhang District in Shanghai for example,according to the analysis on discharge characteristic of waste and balance of resources and energy utilization,mixed anaerobic digestion was chosen to dispose waste based on government guidance and feasibility analysis of project,and the combining disposal and resource utilization of waste were realized in two enterprises,providing reference for close cases.展开更多
[Objective] The research aimed at introducing the background and utilization of germplasm resources in maize.[Method] The research progress on genetic background and utilization of maize germplasm resources was compre...[Objective] The research aimed at introducing the background and utilization of germplasm resources in maize.[Method] The research progress on genetic background and utilization of maize germplasm resources was comprehensively reviewed in this paper,including maize heterotic groups and heterotic patterns,their flexible application in breeding and the utilization of various types of original materials.[Result] The results show that germplasm resource is the premise and basis for maize breeding.In-depth understanding and a reasonable selection of germplasm resources can significantly improve the breeding efficiency and speed up the breeding process.At the same time,it is considered that the selection and construction of original materials in maize breeding can not be limited to the heterotic groups and heterotic patterns,but has to be used reasonablely according to different types of germplasm resources and individual breeding objective and idea as well.[Conclusion] This study had broadened the idea and provided inspiration for the maize breeding practice in China.展开更多
In this paper,the research achievements and progress of Yunnan tea germplasm resource in past sixty years are systematically reviewed from the following aspects：exploration,collecting,conservation,protection,identifi...In this paper,the research achievements and progress of Yunnan tea germplasm resource in past sixty years are systematically reviewed from the following aspects：exploration,collecting,conservation,protection,identification,evaluation and shared utilization.Simultaneously,the current problems and the suggestions about subsequent development of tea germplasm resources in Yunnan were discussed,including superior and rare germplasm collection,tea genetic diversity research,biotechnology utilization in tea germplasm innovation,super gene exploration and function,the construction of utilization platform,biological base of species and population conservation.展开更多
This paper describes the geographical distribution, utilization, cultural value and ex-situ conservation of bamboo resources in Xishuangbanna, Yunan Province, China. Sixty species of bamboo in 19 genera are recorded i...This paper describes the geographical distribution, utilization, cultural value and ex-situ conservation of bamboo resources in Xishuangbanna, Yunan Province, China. Sixty species of bamboo in 19 genera are recorded in Xishuangbanna. The area of natural bamboo forest is 14319 ha, accounting for 5.92% of whole area of Xishuangbanna. The abundant resource of bamboo plays an important role in the economics and culture of national minorities in Xishuangbanna. Xishuangbanna Tropic Botanic Garden, Chinese Academy of Sciences （CAS）, started to introduce bamboo species in 1961 and established the ex-situ conservation reserve （8 ha） of bamboo in 1981. Up to now, 211 species in 27 genera collected from tropic and sub-tropic of China and South-east Asia have been planted in the bamboo reserve, of which 11 species have bloomed and seeded, and their seeds were cultivated in Xishuangbanna Tropical Botanic Gardens, CAS, China.展开更多
In this paper, we discussed the utilization potential of Sorghum-Sudan grass hybrid as a bio-energy resource, including the growth speed, biomass, adapt- ability, resistance, photosynthesis, and calorific value. The S...In this paper, we discussed the utilization potential of Sorghum-Sudan grass hybrid as a bio-energy resource, including the growth speed, biomass, adapt- ability, resistance, photosynthesis, and calorific value. The Sorghum-Sudan grass hy- brid grew rapidly, and it had abundant biomass resources, strong adaptability and strong resistance （leanness-resistance, salt-tolerance, alkali-tolerance, etc）. Moreover, the planting of Sorghum-Sudan grass hybrid did not occupy the farmland. It had high photosynthetic efficiency and high calorific value. Its composition also met the requirements by raw material of bio-energy resources. In addition, the economic benefits of Sorghum-Sudan grass hybrid as a bio-energy resource were analyzed, and the existing problems and countermeasures in the development of Sorghum-Su- dan grass hybrid as a bio-energy resource were discussed.展开更多
The sustainable development of grassland resources objectively requires that the social, economic and ecological costs of grassland resources should be brought into economic activities in order to internalize the exte...The sustainable development of grassland resources objectively requires that the social, economic and ecological costs of grassland resources should be brought into economic activities in order to internalize the external costs of grassland resources. Eco-tax is a very effective means to internalize the externality of grassland resources. Its main advantage is to bdng the cost of ecological environment into economic life, which can amend market pdce, improve the effectiveness of government policies, perform the eco-saboteurs-pays principle, and thus perfect the ecological compensation system.展开更多
Aiming at utilization status of arable land resources in Anshun City,a Karst area,quantitative and qualitative analyses were performed from the viewpoints of quality,quantity and benefits of arable land.And the benefi...Aiming at utilization status of arable land resources in Anshun City,a Karst area,quantitative and qualitative analyses were performed from the viewpoints of quality,quantity and benefits of arable land.And the benefits of arable land were analyzed with multiple linear regression.Finally,the sustainable utilization of arable land resources was discussed,and several protection measures were pointed out.展开更多
The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extract...The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic oxides.This oxygen and metal extraction can be achieved using existing metallurgical techniques.Furthermore,the ample reserves of water ice on the Moon offer another means for oxygen production.This paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental conditions.It delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar regolith.The two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the Moon.Considering the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the Moon.This review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.展开更多
Damp-heat karst mountainous areas are unique areas in terms of socialeconomic development, resource endowment and eco-environment in China, where natural resources are abundant,unique and diverse. However, fragile eco...Damp-heat karst mountainous areas are unique areas in terms of socialeconomic development, resource endowment and eco-environment in China, where natural resources are abundant,unique and diverse. However, fragile eco-environment, undeveloped economy and culture, and conflict of human and environment should not be ignored. In the research, a framework of integration of resource-development and environment-protection in damp-heat karst was designed on basis of resource and environment integration, which was applied to Daxin County in Guangxi Province. Furthermore, some integration models were proposed, including integration of development of characteristic agricultural resources and protection of eco-environment, integration of development of manganese ore resources and protection of eco-environment, integration of development of tourism resources and protection of ecoenvironment and integration of development of clean energy and protection of eco-environment.展开更多
基金supported by the National Key Research and Development Program of China (2021YFD1901200)the Key Research and Development Program of Hubei Province of China (2023BBB028)+1 种基金the Earmarked Fund of Hubei province of Chinathe Fundamental Research Funds for the Central Universities (2662024ZKQD005)
文摘The effects of micro-ridge-furrow planting(MR)on yield and the efficiency of light,water,and thermal resource use in rapeseed were tested in a three-year field experiment comparing MR to conventional flat planting.MR enhanced canopy heterogeneity by altering the leaf angle between plants on ridges and furrows.The heterogeneous canopy environment increased intercepted photosynthetic active radiation,alleviated canopy temperature stress,and optimized canopy humidity,leading to improvements in light-nitrogen matching and net photosynthetic rate.Consequently,dry matter and yield increased by 13.0%and 11.0%,respectively,while radiation,thermal,and precipitation utilization efficiency increased by 12.3%-16.2%.The corresponding improvements in yield and resource use efficiency were attributed to a heterogeneous canopy environment that improved microclimatic conditions.
文摘Purpose–This study is dedicated to systematically collating the distribution and utilization circumstances of geothermal resources in China.Moreover,it endeavors to formulate a comprehensive utilization scheme for geothermal resources during the construction and operation phases of the railway,thereby furnishing robust support and valuable reference for the holistic utilization of geothermal resources along the railway corridor.Design/methodology/approach–Through an in-depth analysis of the extant utilization of geothermal resources in China,it is discerned that the current utilization modalities are relatively rudimentary,bereft of rational planning and characterized by a low utilization rate.Concurrently,by integrating the practical requisites of railway construction and operation and conducting theoretical dissections,a comprehensive utilization plan for the construction and operation periods of railway is proffered.Findings–In light of the railway’s construction and operation characteristics,geothermal utilization models are categorized.During construction,comprehensive modalities include tunnel illumination power generation,construction area heating,tunnel antifreeze using shallow geothermal energy,tunnel pavement antifreeze and construction concrete maintenance.During operation,they comprise operation tunnel antifreeze,railway roadbed antifreeze,railway switch snow melting and deicing,geothermal power station establishment and railway hot spring health tourism planning.Originality/value–According to the characteristics and actual needs of railway construction and operation,it is of great significance to rationally utilize geothermal resources to promote the construction and operation of green railways.
基金Supported by the Scientific Research Start-up Project for the Introduction of Senior Talents of Chongqing Three Gorges Vocational College(sxzyzg-202405).
文摘The resource utilization of sludge can effectively achieve the regeneration and utilization of resources,and promote sustainable economic development.Sludge carbonization is a sludge treatment and disposal technology with broad application prospects,and its products have shown significant resource potential in land use,fuel utilization,and other fields.At present,China still faces some challenges in the resource utilization of sludge carbonization,such as issues related to heavy metal stability and outdated standards.In the future,it is necessary to further strengthen research,improve the standard system,and promote the widespread application of sludge carbonization technology,so as to achieve the goals of sludge reduction,harmlessness,and resource utilization and support the development of circular economy.
基金Scientific Research Funding Project of Educational Department of Liaoning Province in 2021(LJKZ1243).
文摘[Objectives] To evaluate the utilization and application value of vine plant resources,and enrich the urban vertical greening landscape.[Methods] Route survey and sample plot observation methods were employed to investigate 96 greening sites in Shenyang area,China.[Results] There are 21 species of vines used in vertical greening,including 15 species of woody vines and 6 species of herbaceous vines.According to the biological characteristics of vine plants and the actual needs of vertical application in landscape greening,a comprehensive evaluation system with one target layer,three criterion layers and a total of 14 indicators was constructed,and the application value of 21 species of vines was evaluated.Based on the comprehensive evaluation value,the vine plants were divided into four grades,and four of them had good application prospects and could be used in urban vertical greening.[Conclusions] The evaluation model and evaluation results will provide a theoretical basis for the rational use of vine plant resources.
文摘Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly managed or over-applied.This paper analyzes the existing challenges in the utilization of livestock manure,focusing on source control,process management,and end-use treatment.To address these issues,it proposes establishing a sustainable long-term mechanism.Key recommendations include enhancing source control,strengthening policy support to alleviate the financial burden on enterprises,aligning with market demands,intensifying the promotion of technologies and equipment development,and improving manure quality.In addition,advocating for grain-efficient animal husbandry and promoting diversified utilization through bio-chain approaches are essential.
文摘State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The laboratory was reconstructed based on former State Key Laboratory of Baiyun Obo Rare Earth Resources Researches and Comprehensive Utilization.
基金supported by the National Natural Science Foundation of China(Nos.52322001,52070183,and 52330001)the National Key R&D Program of China(No.2023YFE0113800)the Excellent Member of the Youth Innovation Promotion Association,Chinese Academy of Sciences(No.Y2023010).
文摘Membrane technology has thus far played an essential role in promoting environmental sustainability through improving the quality of water.Taking into account the current growth rate of membrane products along with the market capacity,a tremendous rise in the amount of end-of-life(EoL)membranes is inevitable.In 2022,the global records of EoL membranes reached 35,000 tons.Recycling and resource utilization of EoL membranes is a viable option and hold significant promises for energy conservation and carbon neutralization.The present work provides an extensive overview of the latest progress in the field in relation with the prominent application cases.Furthermore,the avenues for the contributions of membrane recycling treatment technology within the framework of“carbon neutrality”are discussed with emphasis on permeability,pollutant interception capacity,and other relevant factors associated with the recycled membranes.This review strives to summarize the recycling and efficient utilization of EoL membranes,aiming at providing technical support to reduce operational costs and promote the low-carbon development of membrane technology.
基金Supported by Binzhou Social Sciences Planning Project in 2024(24-SKGH-051)Binzhou Comprehensive Experimental Station Project of Shandong Provincial Forage Industry Technology System(SDAIT-23-10).
文摘This paper investigated and analyzed the conservation and utilization of four local livestock breeds in Binzhou City:Wadi Sheep,Bohai Black Cattle,Wudi Donkey,and Lubei White Goat.Shortcomings in the protection and utilization of local germplasm resources were pointed out,and strategies and recommendations were proposed to promote high-quality development of livestock and poultry genetic resources in Binzhou,including building a solid germplasm foundation,standardizing production,and driving innovation.This paper provides references for the conservation,development,and utilization of local genetic resources in Binzhou City.
文摘State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.
文摘State Key Laboratory of Baiyun Obo Rare Earth Resource Researches and Comprehensive Utilization was approved by the Ministry of Science and Technology to be one of the national key laboratories in November 2022.The laboratory was reconstructed based on former State Key Laboratory of Baiyun Obo Rare Earth Resources Researches and Comprehensive Utilization.
文摘This study aims to explore the potential of using a blended pulp from Mikania micrantha(M.micrantha)and waste paper for producing composite paper.The effects of the mass ratio of M.micrantha stem to waste paper(MRMW),the beating time(BT),the water-to-pulp mass ratio(WPMR)and the times of pulp suspension screening(TPSS)on the paper’s basic structural,optical and mechanical properties are investigated.It is found that MRMW primarily affects the grammage(mass per unit area),density,bulkness and whiteness;WPMR mainly affects the thickness and density;TPSS mainly affects the thickness and grammage.When MRMW is 3:7,the composite paper shows higher values for thickness,grammage,density and whiteness;whereas when MRMW is 7:3,these values are lower.Extending BT can increase paper density.The tensile strengths of all prepared samples fall in the range of 1.5 to 4.1 kN/m,indicating their excellent strength properties that meet the demands of many paper applications.The artistic bags and lampshades crafted from this composite paper exhibit a more natural texture compared to conventional packaging paper.This research demonstrates the feasibility of papermaking by using M.micrantha,while showcasing the potential for synergistic integration of waste resources with traditional hand papermaking techniques.
基金Supported by Science and Technology Planning Project of Science Committee Science Committee(08DZ1980902)~~
文摘With the extending scale of agricultural production,the treatment and utilization of waste have become increasingly serious environmental problem.Taking city garden and Zhongnan pasture in Pujiang Town of Minhang District in Shanghai for example,according to the analysis on discharge characteristic of waste and balance of resources and energy utilization,mixed anaerobic digestion was chosen to dispose waste based on government guidance and feasibility analysis of project,and the combining disposal and resource utilization of waste were realized in two enterprises,providing reference for close cases.
基金Supported by National Key Technology R&D Program(2007BAD69B05)~~
文摘[Objective] The research aimed at introducing the background and utilization of germplasm resources in maize.[Method] The research progress on genetic background and utilization of maize germplasm resources was comprehensively reviewed in this paper,including maize heterotic groups and heterotic patterns,their flexible application in breeding and the utilization of various types of original materials.[Result] The results show that germplasm resource is the premise and basis for maize breeding.In-depth understanding and a reasonable selection of germplasm resources can significantly improve the breeding efficiency and speed up the breeding process.At the same time,it is considered that the selection and construction of original materials in maize breeding can not be limited to the heterotic groups and heterotic patterns,but has to be used reasonablely according to different types of germplasm resources and individual breeding objective and idea as well.[Conclusion] This study had broadened the idea and provided inspiration for the maize breeding practice in China.
基金Supported by Project of National Natural Science Foundation of China (31160175)Project of Tea Research Institute of Yunnan Academy of Agricultural Sciences (2009A0937)National Modern Agriculture Technology System Projects in Tea Industry (nycytx-23)~~
文摘In this paper,the research achievements and progress of Yunnan tea germplasm resource in past sixty years are systematically reviewed from the following aspects：exploration,collecting,conservation,protection,identification,evaluation and shared utilization.Simultaneously,the current problems and the suggestions about subsequent development of tea germplasm resources in Yunnan were discussed,including superior and rare germplasm collection,tea genetic diversity research,biotechnology utilization in tea germplasm innovation,super gene exploration and function,the construction of utilization platform,biological base of species and population conservation.
基金The Ministry of Science and Technology of the People’s Republic of China (2004DKA30400-05-01-02)
文摘This paper describes the geographical distribution, utilization, cultural value and ex-situ conservation of bamboo resources in Xishuangbanna, Yunan Province, China. Sixty species of bamboo in 19 genera are recorded in Xishuangbanna. The area of natural bamboo forest is 14319 ha, accounting for 5.92% of whole area of Xishuangbanna. The abundant resource of bamboo plays an important role in the economics and culture of national minorities in Xishuangbanna. Xishuangbanna Tropic Botanic Garden, Chinese Academy of Sciences （CAS）, started to introduce bamboo species in 1961 and established the ex-situ conservation reserve （8 ha） of bamboo in 1981. Up to now, 211 species in 27 genera collected from tropic and sub-tropic of China and South-east Asia have been planted in the bamboo reserve, of which 11 species have bloomed and seeded, and their seeds were cultivated in Xishuangbanna Tropical Botanic Gardens, CAS, China.
基金Supported by Experiment Teaching Research Project of Qujing Normal University in 2012-2013Qujing Normal University Youth Program(2010QN001)Scientific Research Foundation of Yunnan Provincial Department of Education(2011C017)~~
文摘In this paper, we discussed the utilization potential of Sorghum-Sudan grass hybrid as a bio-energy resource, including the growth speed, biomass, adapt- ability, resistance, photosynthesis, and calorific value. The Sorghum-Sudan grass hy- brid grew rapidly, and it had abundant biomass resources, strong adaptability and strong resistance （leanness-resistance, salt-tolerance, alkali-tolerance, etc）. Moreover, the planting of Sorghum-Sudan grass hybrid did not occupy the farmland. It had high photosynthetic efficiency and high calorific value. Its composition also met the requirements by raw material of bio-energy resources. In addition, the economic benefits of Sorghum-Sudan grass hybrid as a bio-energy resource were analyzed, and the existing problems and countermeasures in the development of Sorghum-Su- dan grass hybrid as a bio-energy resource were discussed.
文摘The sustainable development of grassland resources objectively requires that the social, economic and ecological costs of grassland resources should be brought into economic activities in order to internalize the external costs of grassland resources. Eco-tax is a very effective means to internalize the externality of grassland resources. Its main advantage is to bdng the cost of ecological environment into economic life, which can amend market pdce, improve the effectiveness of government policies, perform the eco-saboteurs-pays principle, and thus perfect the ecological compensation system.
基金Supported by Natural Science Youth Project of Education Department of Guizhou Province (Guizhou Education Science 2008085)
文摘Aiming at utilization status of arable land resources in Anshun City,a Karst area,quantitative and qualitative analyses were performed from the viewpoints of quality,quantity and benefits of arable land.And the benefits of arable land were analyzed with multiple linear regression.Finally,the sustainable utilization of arable land resources was discussed,and several protection measures were pointed out.
基金financially supported by the National Natural Science Foundation of China(Nos.52404328,52274412,and 52374418)the China Postdoctoral Science Foundation(No.2024M753248)。
文摘The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic oxides.This oxygen and metal extraction can be achieved using existing metallurgical techniques.Furthermore,the ample reserves of water ice on the Moon offer another means for oxygen production.This paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental conditions.It delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar regolith.The two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the Moon.Considering the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the Moon.This review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.
基金Supported by National Natural Science Foundation of China(40961004,40761027)Guangxi Natural Science Foundation(2011jjA50016)+1 种基金Guangxi Philosophy and Social Science Research Project of 11th Five-Year Plan(06FJY023)Key Laboratory Funds of Ministry of Education(B3G1110)~~
文摘Damp-heat karst mountainous areas are unique areas in terms of socialeconomic development, resource endowment and eco-environment in China, where natural resources are abundant,unique and diverse. However, fragile eco-environment, undeveloped economy and culture, and conflict of human and environment should not be ignored. In the research, a framework of integration of resource-development and environment-protection in damp-heat karst was designed on basis of resource and environment integration, which was applied to Daxin County in Guangxi Province. Furthermore, some integration models were proposed, including integration of development of characteristic agricultural resources and protection of eco-environment, integration of development of manganese ore resources and protection of eco-environment, integration of development of tourism resources and protection of ecoenvironment and integration of development of clean energy and protection of eco-environment.
