Forest planning involves estimating the biomass of species present in the area.Two fundamental parameters are diameter and height through which it is possible to indirectly estimate of biomass present.Digitalisation o...Forest planning involves estimating the biomass of species present in the area.Two fundamental parameters are diameter and height through which it is possible to indirectly estimate of biomass present.Digitalisation of forestry operations,such as forest planning,is crucial and should be affordable and easy-to-use digital applications and open-source devices.A digital progressive web application(PWA)was designed to record measurements.The app was connected via bluetoot to an open-source IoT digital forestry caliper prototyped by modifying a commercial tree caliper.An economic analysis was carried out considering all costs necessary for the development and operation of the app on smartphones and the preparation of electronic means for creation of the digital caliper.A comparison was made between costs of detecting tree diameters through application of the technology developed compared to costs calculated by applying the use of a dendrometric caliper(three technological levels were considered:L1,L2 and L3).The PWA allowed for easy data entry and viewing,maps and tree densities.The open-source digital caliper showed accuracy and precision comparable with similar commercial devices(1.5%±0.9%and 0.0%±0.9%,respectively).Total time per operator was lower using the digital caliper.From an economic perspective,application of the digital technology was more sustainable than the traditional system.Use of the digital caliper in combination with the web application optimizes detection time of a single tree,and therefore decreases overall cost.展开更多
Climate change is the most severe ecological challenge faced by the world today.Forests,the dominant component of terrestrial ecosystems,play a critical role in mitigating climate change due to their powerful carbon s...Climate change is the most severe ecological challenge faced by the world today.Forests,the dominant component of terrestrial ecosystems,play a critical role in mitigating climate change due to their powerful carbon sequestration capabilities.Meanwhile,climate change has also become a major factor affecting the sustainable management of forest ecosystems.Climate-Smart Forestry(CSF)is an emerging concept in sustainable forest management.By utilizing advanced technologies,such as information technology and artificial intelligence,CSF aims to develop innovative and proactive forest management methods and decision-making systems to address the challenges of climate change.CSF aims to enhance forest ecosystem resilience(i.e.,maintain a condition where,even when the state of the ecosystem changes,the ecosystem functions do not deteriorate)through climate change adaptation,improve the mitigation capabilities of forest ecosystems to climate change,maintain high,stable,and sustainable forest productivity and ecosystem services,and ultimately achieve harmonious development between humans and nature.This concept paper:(1)discusses the emergence and development of CSF,which integrates Ecological Forestry,Carbon Forestry,and Smart Forestry,and proposes the concept of CSF;(2)analyzes the goals of CSF in improving forest ecosystem stability,enhancing forest ecosystem carbon sequestration capacity,and advocating the application and development of new technologies in CSF,including artificial intelligence,robotics,Light Detection and Ranging,and forest digital twin;(3)presents the latest practices of CSF based on prior research on forest structure and function using new generation information technologies at Qingyuan Forest,China.From these practices and reflections,we suggested the development direction of CSF,including the key research topics and technological advancement.展开更多
Entomopathogenic nematodes(EPNs)represent a promising biological control strategy for managing insect pest populations,offering an environmentally sustainable alternative to conventional chemical pesticides.This revie...Entomopathogenic nematodes(EPNs)represent a promising biological control strategy for managing insect pest populations,offering an environmentally sustainable alternative to conventional chemical pesticides.This review examines the application of EPNs in forestry,highlighting their biological and ecological characteristics,mechanisms of action,and efficacy against key forest pests.By exploring various methods of EPN application,including soil injection,foliar spray,and trunk injection,practical challenges and potential solutions for effective implementation are assessed.Case studies demonstrate successful use of EPNs in controlling pests such as bark beetles,wood borers,and root weevils,underscoring their potential for integration into integrated pest management(IPM)programs.Despite current limitations,including environmental sensitivity and application constraints,ongoing research and technological advancements continue to enhance the efficacy and reliability of EPNs.This review underscores the importance of EPNs in sustainable forestry practices and calls for further research to optimize their use and to address existing challenges,ultimately contributing to healthier forest ecosystems and reduced reliance on chemical pesticides.展开更多
Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and r...Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and reducing CO_(2)emissions in ironmaking process.The BC with different ratios of FW were carbonized in a fixed bed reactor,and the physicochemical structure of the coke derived from FW/BC co-carbonization was characterized by Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,solid-state^(13)C nuclear magnetic resonance,optical microscopy,and scanning electron microscopy.The results reveal that the suitable incorporation of FW in BC is 10 wt.%,and the index of coke quality exhibits a good correlation with the optical anisotropy index and the aromaticity of the as-obtained cokes.The partial substitution of BC with FW exhibits potential benefits for colloid formation,owing to the higher hydrogen in FW.However,as the substitution ratio of BC with FW increases,it inhibits coke agglomeration due to more tortuous stacked structures formation during volatile releasing process.Moreover,it was identified that the substitution of higher BC ratios with FW results in the partial replacement of aromatic carbons by oxygenlinked carbons and aliphatic carbons.This substitution leads to a reduction in the aromaticity of the as-obtained coke.展开更多
Biochar,a carbon-rich material derived from the thermochemical conversion of biomass under oxygenfree conditions,has emerged as a sustainable resource for radar-absorbing technologies.This study explores the productio...Biochar,a carbon-rich material derived from the thermochemical conversion of biomass under oxygenfree conditions,has emerged as a sustainable resource for radar-absorbing technologies.This study explores the production of activated biochars from end-of-life wood panels using a scalable and sustainable physical activation method with CO_(2) at different temperatures,avoiding the extensive use of corrosive chemicals and complex procedures associated with chemical or vacuum activation.Compared to conventional chemically or vacuum-activated biochars,the physically activated biochar demonstrated competitive performance while minimizing environmental impact,operational complexity,and energy consumption.Furthermore,activation at 750℃ reduces energy consumption by 14% and 28% compared to activations at 850℃ and 950℃,respectively,emphasizing the cost-effectiveness of this method for large-scale applications.The composite with 15% of biochar embedded in silicon rubber presented good electromagnetic performance,achieving a measured reflection loss(RL)of−37.2 dB at 11.3 GHz with an 8.4 mm thickness and an effective absorption bandwidth(EAB)of 1.25 GHz.These results highlight the potential of biocharsilicone rubber composites as flexible radar-absorbing materials(RAMs)for applications in electromagnetic shielding,anechoic chambers,and Internet of Things(IoT)devices.This study also shows the importance of forestry residues as sustainable precursors for producing low-cost porous carbon materials,aligning with circular economy principles and the United Nations’2030 Agenda for Sustainable Development.This work establishes a framework for scalable,cost-effective,and sustainable biochar production,addressing critical challenges in electromagnetic interference(EMI)mitigation and advancing the global adoption of green technologies.展开更多
As a vital component of the national economic system,the forestry economy plays a significant role in promoting economic and social development.With the increasing emphasis on green and sustainable development,the car...As a vital component of the national economic system,the forestry economy plays a significant role in promoting economic and social development.With the increasing emphasis on green and sustainable development,the carbon sink market has gained widespread attention and experienced rapid expansion,exerting a profound impact on the sustainable development of the forestry economy.In this new stage,deepening the relationship between the carbon sink market and the forestry economy is of great practical significance for enhancing forest coverage,advancing forestry economic growth,and fostering green ecological development.This paper analyzes the impact of the carbon sink market on the sustainable development of the forestry economy and explores specific strategies for its advancement.展开更多
The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and export...The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and exports in China were analyzed from 1973 to 2003, the analysis results showed an apparent fluctuation in timber production during 1973-1995 but a decreasing trend during 1995-2002, an increasing trend in timber imports since 1995 especially after the implementation of the Natural Forest Protection Project （NFPP）, an decreasing trend year by year in timber exports since 1995. Secondly, this paper presented a time series analysis of actual forest area demand in the sustainable yield and production approach in China from 1973 to 2003, which includes both import and export forest area demand. The results showed the actual forest area demand simulated from the sustainable yield approach was slightly higher than that from the production approach during 1978-1988 and a little lower during 1989-2003; however, the actual forest area demands simulated by these two model approaches were larger than calculations that expressed in conventional forest EF. Meanwhile, the results indicated the forestry development in China during 1978-1988 was unsustainable due to overexploitation of forest stocking volumes, and China＇s forestry moved toward sustainable development since 1989 because forest resources are exploited at lower rates than they are regenerated. However, compared to forestry developed countries, the forestry development capacity in China is still lower. Finally, based on the model results we analyzed the relationships between forestry EF and the key policies, including trade policy, economic policy and forest conservation programs. In addition, several suggestions about reducing forestry EF and enhancing sustainable forestry development in China are given.展开更多
Guangdong has become a major＂window＂ for invasive plants, and the largest zone, where cross-border and intercontinental migration frequencies reach the peak. The invasive plants in Guangdong are dominated by Mikania...Guangdong has become a major＂window＂ for invasive plants, and the largest zone, where cross-border and intercontinental migration frequencies reach the peak. The invasive plants in Guangdong are dominated by Mikania micrantha, Eichhornia crassipes, Alternanthera philoxeroides, Eupatorium odoratum, and Wedelia trilobata. It is an important way for treating the invasive plants by exploring the prevention methods and making ful use of the characteristics of the invasive plants, and it is of great significance to prevent and utilize alien species in a scientific and effective way in order to control the invasive plants with minimal cost.展开更多
Based on the analysis of the current situation of Chinese forestry and a series of ecological, environmental, eco-nomic, and social problems, this paper emphasized on the importance of forests in social and economic d...Based on the analysis of the current situation of Chinese forestry and a series of ecological, environmental, eco-nomic, and social problems, this paper emphasized on the importance of forests in social and economic development in China The author pointed out that sustainable development, particularly the sustainable development of forestry, is the inevitable choice to solve the problems of ecological environment and social economics. The objectives, criteria, and strategies of sus-taining forestry were also demonstrated and expounded, from the viewpoints of ecology, economics, and sociology.展开更多
The survey of textbook 'Garden Plant Protection' was introduced in this study,and the necessity of textbook 'Garden Plant Protection' construction in agricultural and forestry universities or higher vo...The survey of textbook 'Garden Plant Protection' was introduced in this study,and the necessity of textbook 'Garden Plant Protection' construction in agricultural and forestry universities or higher vocational colleges was also analyzed.Aimed at the status of textbook 'Garden Plant Protection' construction in agricultural and forestry universities or higher vocational colleges,the corresponding ideas for its construction were put forward.展开更多
Forestry insurance of our country has developed slowly, of which the main difficulty lies in predicting and determining forestry risk , confirming the sum insured, raising the premiums , indemnity for property loss , ...Forestry insurance of our country has developed slowly, of which the main difficulty lies in predicting and determining forestry risk , confirming the sum insured, raising the premiums , indemnity for property loss , coordinating forestry insurance and forestry protection, and lack of insurance legal system etc. With the implementation of forestry’s standardized project, and overcoming effectively the technological obstacle existing in forestry’s insurance , the development speed of forestry’s insurance will be accelerated too.展开更多
Forestry technological innovation is an indispensable and important aid to the development of modern forestry and can effectively utilize forestry resources. Therefore, attention should be paid to the role of forestry...Forestry technological innovation is an indispensable and important aid to the development of modern forestry and can effectively utilize forestry resources. Therefore, attention should be paid to the role of forestry technological innovation in promoting the development of modern forestry, so as to give full play to the advantages of forestry technology. Through the rational application of science and technology in the process of modern agricultural development and the promotion of forestry technological innovation, the healthy and sustainable development of forestry can be guaranteed, thus promoting the continuous improvement of forestry economic level and providing new economic growth points for our country.展开更多
Forestry is one of the important pillars of Chinas social and economic development. It has provided great help and made indelible contribution to Chinas development. However, due to the imperfection of Chinas early sy...Forestry is one of the important pillars of Chinas social and economic development. It has provided great help and made indelible contribution to Chinas development. However, due to the imperfection of Chinas early system, the development of forestry industry has been affected. Innovation of forestry technology has become an urgent and imperative task.展开更多
Forestry resources are important basic resources for China's economic construction and development. For a long time, China has carried out a large amount of development and utilization of forestry resources, with ...Forestry resources are important basic resources for China's economic construction and development. For a long time, China has carried out a large amount of development and utilization of forestry resources, with more and more exploitation. At the same time, the demand for forestry resources for the optimization and upgrading of industrial structure has also been increasing year by year. Every year, a large number of forestry resources will be developed and utilized. In the long run, forestry resources are facing a shortage and the whole ecological environment of the forest region is destroyed. Based on this, the forestry industry should make positive changes in this situation. In the process of resource development and utilization, attention should be paid to environmental protection and sustainable development of forestry economy. Relevant departments and technical personnel should strengthen the research on forestry forestation technology to drive the further development of forestry industry with technology. Based on the investigation and understanding of China's forestry resources at present, we found that many enterprises have excessive consumption and waste of forestry resources, which is not conducive to the protection of ecological environment and the sustainable development of forestry resources. Therefore, relevant departments should continuously improve forestry policies and systems, vigorously carry out forestry afforestation projects and take effective measures to protect forest areas. Resource development enterprises should implement relevant forestry systems and policies, rationally develop and utilize forestry resources and increase the protection of forestry resources, which is of great significance to the harmonious coexistence of economic development and ecological environment.展开更多
With the development of social economy, different industries in our country have achieved structural optimization and adjustment. Under the new social background, following the pace of development of the times and tak...With the development of social economy, different industries in our country have achieved structural optimization and adjustment. Under the new social background, following the pace of development of the times and taking sustainable development as the strategic goal, in the process of economic construction and development, we pay attention to environmental protection, realize the harmonious coexistence of man and nature, and change and adjust the traditional pattern of pollution first and treatment later. In the process of economic construction and development in the past, the over-exploitation and utilization of forestry resources led to the decrease of the coverage rate and the total amount of forestry resources in our country. At the same time, there were problems of resource shortage and environmental damage. Based on this, the state vigorously carried out the artificial afforestation project, which is an important measure for the construction and development of ecological engineering and an inevitable trend for the development of forestry. The forestry department and the national environmental department have paid more attention to the protection of forestry ecological environment. While vigorously carrying out forestry afforestation projects, they have optimized the forestry industrial structure, introduced advanced afforestation technology and forestry management model, and strengthened the protection and management of forest resources. In this paper, forestry forestation technology is analyzed and forestry protection measures are discussed to provide reference for the development of forestry in China.展开更多
China has a vast territory, but forestry resources are relatively scarce and the distribution is uneven. The per capita share of forestry resources is relatively low. With the rapid development of economy and urban co...China has a vast territory, but forestry resources are relatively scarce and the distribution is uneven. The per capita share of forestry resources is relatively low. With the rapid development of economy and urban construction, the insufficient protection of forestry resources has also led to the decline of forestry resources which has a very negative impact on the ecological environment. However, in recent years, with the increasing awareness of ecological environment protection, the importance of sustainable development of forestry economy has been fully recognized. It can be said that when the forestry economy develops steadily, it will also promote the local economic construction and improve the living standard of local residents. In the new development period, we should fully coordinate the development of forestry ecological environment protection and forestry economic construction, improve the level of forestry economic construction and further promote the development of forestry ecological environment protection.展开更多
At this stage, forestry development and forestry technological innovation are closely linked. In the process of development, we should not only pay attention to the actual needs of forestry development, but also grasp...At this stage, forestry development and forestry technological innovation are closely linked. In the process of development, we should not only pay attention to the actual needs of forestry development, but also grasp the focus of innovative technology. Specific problems and specific analysis methods should be adopted to make targeted analysis and grasp the relationship between forestry development and forestry innovation technology to promote the innovation and development of agricultural technology and the growth of modern agriculture. With economic benefits, the economy of the forestry unit will have room for steady growth. In this paper, the strategy of modern forestry development and the significance of forestry technological innovation will be explained in detail.展开更多
The development and construction level of ecological forestry largely depends on the popularization and application of forestry technology. The application and popularization of forestry technology have a crucial impa...The development and construction level of ecological forestry largely depends on the popularization and application of forestry technology. The application and popularization of forestry technology have a crucial impact on the construction of ecological forestry at the present stage and the development in the future. Forestry technology in forestry development has important and far-reaching significance for future forestry development. Based on this, the significance of forestry technology popularization in ecological forestry construction was analyzed, and the measures to improve the effect of forestry technology popularization and the ways to widely apply forestry technology in ecological forestry construction were discussed.展开更多
Based on the actual forestry work in Keshiketeng Banner of Chifeng City, this paper analyzes the main problems existing in the popularization of forestry technology in grass-roots forestry stations, and then puts forw...Based on the actual forestry work in Keshiketeng Banner of Chifeng City, this paper analyzes the main problems existing in the popularization of forestry technology in grass-roots forestry stations, and then puts forward the countermeasures for improvement. At present, the software and hardware of the basic forestry station in Keshiketeng Banner to carry out the forestry technology promotion work are not perfect, the promotion function has certain contradiction, and the personnel structure is difficult to meet the needs of the forestry technology promotion work. The local government should create a software and hardware environment for grass-roots forestry stations to carry out forestry technology promotion, strengthen its technology promotion function, and take measures to optimize the structure of grass-roots forestry station technology promotion personnel.展开更多
The development of modern forestry technology can be simply understood as a process of combining science with ecological forestry. If the country wants to promote the development of ecological forestry and improve the...The development of modern forestry technology can be simply understood as a process of combining science with ecological forestry. If the country wants to promote the development of ecological forestry and improve the economic benefits of forestry, it must innovate modern forestry technology and promote the application of forestry technology in the industry. This paper will focus on the analysis of ecological forestry technology, focusing on the application of forestry technology in the development of ecological forestry, and put forward specific measures for technological innovation of ecological forestry.展开更多
基金supported by the Italian Ministry of Agriculture,Ministry of Agriculture,Food Sovereignty and Forestry(MASAF),National program sub project Precision Forestry(AgriDigit program)(DM 36509.7305.2018 of 20/12/2018).
文摘Forest planning involves estimating the biomass of species present in the area.Two fundamental parameters are diameter and height through which it is possible to indirectly estimate of biomass present.Digitalisation of forestry operations,such as forest planning,is crucial and should be affordable and easy-to-use digital applications and open-source devices.A digital progressive web application(PWA)was designed to record measurements.The app was connected via bluetoot to an open-source IoT digital forestry caliper prototyped by modifying a commercial tree caliper.An economic analysis was carried out considering all costs necessary for the development and operation of the app on smartphones and the preparation of electronic means for creation of the digital caliper.A comparison was made between costs of detecting tree diameters through application of the technology developed compared to costs calculated by applying the use of a dendrometric caliper(three technological levels were considered:L1,L2 and L3).The PWA allowed for easy data entry and viewing,maps and tree densities.The open-source digital caliper showed accuracy and precision comparable with similar commercial devices(1.5%±0.9%and 0.0%±0.9%,respectively).Total time per operator was lower using the digital caliper.From an economic perspective,application of the digital technology was more sustainable than the traditional system.Use of the digital caliper in combination with the web application optimizes detection time of a single tree,and therefore decreases overall cost.
基金financially supported by the National Natural Science Foundation of China(32192435)the Application and Demonstration Project of Network Security and Informatization Technology,Chinese Academy of Sciences(CAS-WX2022SF-0101)+1 种基金the Liaoning Provincial Key Research and Development Program(2023021230-JH2/1018)the Youth Innovation Promotion Association of CAS(2023205).
文摘Climate change is the most severe ecological challenge faced by the world today.Forests,the dominant component of terrestrial ecosystems,play a critical role in mitigating climate change due to their powerful carbon sequestration capabilities.Meanwhile,climate change has also become a major factor affecting the sustainable management of forest ecosystems.Climate-Smart Forestry(CSF)is an emerging concept in sustainable forest management.By utilizing advanced technologies,such as information technology and artificial intelligence,CSF aims to develop innovative and proactive forest management methods and decision-making systems to address the challenges of climate change.CSF aims to enhance forest ecosystem resilience(i.e.,maintain a condition where,even when the state of the ecosystem changes,the ecosystem functions do not deteriorate)through climate change adaptation,improve the mitigation capabilities of forest ecosystems to climate change,maintain high,stable,and sustainable forest productivity and ecosystem services,and ultimately achieve harmonious development between humans and nature.This concept paper:(1)discusses the emergence and development of CSF,which integrates Ecological Forestry,Carbon Forestry,and Smart Forestry,and proposes the concept of CSF;(2)analyzes the goals of CSF in improving forest ecosystem stability,enhancing forest ecosystem carbon sequestration capacity,and advocating the application and development of new technologies in CSF,including artificial intelligence,robotics,Light Detection and Ranging,and forest digital twin;(3)presents the latest practices of CSF based on prior research on forest structure and function using new generation information technologies at Qingyuan Forest,China.From these practices and reflections,we suggested the development direction of CSF,including the key research topics and technological advancement.
文摘Entomopathogenic nematodes(EPNs)represent a promising biological control strategy for managing insect pest populations,offering an environmentally sustainable alternative to conventional chemical pesticides.This review examines the application of EPNs in forestry,highlighting their biological and ecological characteristics,mechanisms of action,and efficacy against key forest pests.By exploring various methods of EPN application,including soil injection,foliar spray,and trunk injection,practical challenges and potential solutions for effective implementation are assessed.Case studies demonstrate successful use of EPNs in controlling pests such as bark beetles,wood borers,and root weevils,underscoring their potential for integration into integrated pest management(IPM)programs.Despite current limitations,including environmental sensitivity and application constraints,ongoing research and technological advancements continue to enhance the efficacy and reliability of EPNs.This review underscores the importance of EPNs in sustainable forestry practices and calls for further research to optimize their use and to address existing challenges,ultimately contributing to healthier forest ecosystems and reduced reliance on chemical pesticides.
基金supported by the National Natural Science Foundation of China(Grant No.51706160)Natural Science Foundation of Wuhan(2024040701010057)+2 种基金Hubei Technological Innovation Special Fund(Grant Nos.2023AFA004,2023BCB106,and 2022BCA085)14th“Five-Year Plan’’Hubei Provincial Advantaged Characteristic Disciplines Project of Wuhan University of Science and Technology(2023C0108)Foundation of Hubei Key Laboratory of Industrial Fume&Dust Pollution Control(HBIK2020-02).
文摘Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and reducing CO_(2)emissions in ironmaking process.The BC with different ratios of FW were carbonized in a fixed bed reactor,and the physicochemical structure of the coke derived from FW/BC co-carbonization was characterized by Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,solid-state^(13)C nuclear magnetic resonance,optical microscopy,and scanning electron microscopy.The results reveal that the suitable incorporation of FW in BC is 10 wt.%,and the index of coke quality exhibits a good correlation with the optical anisotropy index and the aromaticity of the as-obtained cokes.The partial substitution of BC with FW exhibits potential benefits for colloid formation,owing to the higher hydrogen in FW.However,as the substitution ratio of BC with FW increases,it inhibits coke agglomeration due to more tortuous stacked structures formation during volatile releasing process.Moreover,it was identified that the substitution of higher BC ratios with FW results in the partial replacement of aromatic carbons by oxygenlinked carbons and aliphatic carbons.This substitution leads to a reduction in the aromaticity of the as-obtained coke.
基金FINEP No.01.22.0305.00CAPES—Finance Code 88887.832847/2023-00 and 88887.631486/2021-00.
文摘Biochar,a carbon-rich material derived from the thermochemical conversion of biomass under oxygenfree conditions,has emerged as a sustainable resource for radar-absorbing technologies.This study explores the production of activated biochars from end-of-life wood panels using a scalable and sustainable physical activation method with CO_(2) at different temperatures,avoiding the extensive use of corrosive chemicals and complex procedures associated with chemical or vacuum activation.Compared to conventional chemically or vacuum-activated biochars,the physically activated biochar demonstrated competitive performance while minimizing environmental impact,operational complexity,and energy consumption.Furthermore,activation at 750℃ reduces energy consumption by 14% and 28% compared to activations at 850℃ and 950℃,respectively,emphasizing the cost-effectiveness of this method for large-scale applications.The composite with 15% of biochar embedded in silicon rubber presented good electromagnetic performance,achieving a measured reflection loss(RL)of−37.2 dB at 11.3 GHz with an 8.4 mm thickness and an effective absorption bandwidth(EAB)of 1.25 GHz.These results highlight the potential of biocharsilicone rubber composites as flexible radar-absorbing materials(RAMs)for applications in electromagnetic shielding,anechoic chambers,and Internet of Things(IoT)devices.This study also shows the importance of forestry residues as sustainable precursors for producing low-cost porous carbon materials,aligning with circular economy principles and the United Nations’2030 Agenda for Sustainable Development.This work establishes a framework for scalable,cost-effective,and sustainable biochar production,addressing critical challenges in electromagnetic interference(EMI)mitigation and advancing the global adoption of green technologies.
文摘As a vital component of the national economic system,the forestry economy plays a significant role in promoting economic and social development.With the increasing emphasis on green and sustainable development,the carbon sink market has gained widespread attention and experienced rapid expansion,exerting a profound impact on the sustainable development of the forestry economy.In this new stage,deepening the relationship between the carbon sink market and the forestry economy is of great practical significance for enhancing forest coverage,advancing forestry economic growth,and fostering green ecological development.This paper analyzes the impact of the carbon sink market on the sustainable development of the forestry economy and explores specific strategies for its advancement.
基金This paper was supported by National Natural Science Foundation of China (70373044&30470302) and Rejuvenation Northeast Program of CAS
文摘The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and exports in China were analyzed from 1973 to 2003, the analysis results showed an apparent fluctuation in timber production during 1973-1995 but a decreasing trend during 1995-2002, an increasing trend in timber imports since 1995 especially after the implementation of the Natural Forest Protection Project （NFPP）, an decreasing trend year by year in timber exports since 1995. Secondly, this paper presented a time series analysis of actual forest area demand in the sustainable yield and production approach in China from 1973 to 2003, which includes both import and export forest area demand. The results showed the actual forest area demand simulated from the sustainable yield approach was slightly higher than that from the production approach during 1978-1988 and a little lower during 1989-2003; however, the actual forest area demands simulated by these two model approaches were larger than calculations that expressed in conventional forest EF. Meanwhile, the results indicated the forestry development in China during 1978-1988 was unsustainable due to overexploitation of forest stocking volumes, and China＇s forestry moved toward sustainable development since 1989 because forest resources are exploited at lower rates than they are regenerated. However, compared to forestry developed countries, the forestry development capacity in China is still lower. Finally, based on the model results we analyzed the relationships between forestry EF and the key policies, including trade policy, economic policy and forest conservation programs. In addition, several suggestions about reducing forestry EF and enhancing sustainable forestry development in China are given.
基金Guangdong Boluo Agro-technique Extension Center-South China Agricultural Univeristy Cooperation Project(7700-H13510)~~
文摘Guangdong has become a major＂window＂ for invasive plants, and the largest zone, where cross-border and intercontinental migration frequencies reach the peak. The invasive plants in Guangdong are dominated by Mikania micrantha, Eichhornia crassipes, Alternanthera philoxeroides, Eupatorium odoratum, and Wedelia trilobata. It is an important way for treating the invasive plants by exploring the prevention methods and making ful use of the characteristics of the invasive plants, and it is of great significance to prevent and utilize alien species in a scientific and effective way in order to control the invasive plants with minimal cost.
基金This paper was supported by the National Natural Science Foundation of China (No. 79930800) and Knowledge Innovation Programme of Chinese Academy of Sciences
文摘Based on the analysis of the current situation of Chinese forestry and a series of ecological, environmental, eco-nomic, and social problems, this paper emphasized on the importance of forests in social and economic development in China The author pointed out that sustainable development, particularly the sustainable development of forestry, is the inevitable choice to solve the problems of ecological environment and social economics. The objectives, criteria, and strategies of sus-taining forestry were also demonstrated and expounded, from the viewpoints of ecology, economics, and sociology.
文摘The survey of textbook 'Garden Plant Protection' was introduced in this study,and the necessity of textbook 'Garden Plant Protection' construction in agricultural and forestry universities or higher vocational colleges was also analyzed.Aimed at the status of textbook 'Garden Plant Protection' construction in agricultural and forestry universities or higher vocational colleges,the corresponding ideas for its construction were put forward.
文摘Forestry insurance of our country has developed slowly, of which the main difficulty lies in predicting and determining forestry risk , confirming the sum insured, raising the premiums , indemnity for property loss , coordinating forestry insurance and forestry protection, and lack of insurance legal system etc. With the implementation of forestry’s standardized project, and overcoming effectively the technological obstacle existing in forestry’s insurance , the development speed of forestry’s insurance will be accelerated too.
文摘Forestry technological innovation is an indispensable and important aid to the development of modern forestry and can effectively utilize forestry resources. Therefore, attention should be paid to the role of forestry technological innovation in promoting the development of modern forestry, so as to give full play to the advantages of forestry technology. Through the rational application of science and technology in the process of modern agricultural development and the promotion of forestry technological innovation, the healthy and sustainable development of forestry can be guaranteed, thus promoting the continuous improvement of forestry economic level and providing new economic growth points for our country.
文摘Forestry is one of the important pillars of Chinas social and economic development. It has provided great help and made indelible contribution to Chinas development. However, due to the imperfection of Chinas early system, the development of forestry industry has been affected. Innovation of forestry technology has become an urgent and imperative task.
文摘Forestry resources are important basic resources for China's economic construction and development. For a long time, China has carried out a large amount of development and utilization of forestry resources, with more and more exploitation. At the same time, the demand for forestry resources for the optimization and upgrading of industrial structure has also been increasing year by year. Every year, a large number of forestry resources will be developed and utilized. In the long run, forestry resources are facing a shortage and the whole ecological environment of the forest region is destroyed. Based on this, the forestry industry should make positive changes in this situation. In the process of resource development and utilization, attention should be paid to environmental protection and sustainable development of forestry economy. Relevant departments and technical personnel should strengthen the research on forestry forestation technology to drive the further development of forestry industry with technology. Based on the investigation and understanding of China's forestry resources at present, we found that many enterprises have excessive consumption and waste of forestry resources, which is not conducive to the protection of ecological environment and the sustainable development of forestry resources. Therefore, relevant departments should continuously improve forestry policies and systems, vigorously carry out forestry afforestation projects and take effective measures to protect forest areas. Resource development enterprises should implement relevant forestry systems and policies, rationally develop and utilize forestry resources and increase the protection of forestry resources, which is of great significance to the harmonious coexistence of economic development and ecological environment.
文摘With the development of social economy, different industries in our country have achieved structural optimization and adjustment. Under the new social background, following the pace of development of the times and taking sustainable development as the strategic goal, in the process of economic construction and development, we pay attention to environmental protection, realize the harmonious coexistence of man and nature, and change and adjust the traditional pattern of pollution first and treatment later. In the process of economic construction and development in the past, the over-exploitation and utilization of forestry resources led to the decrease of the coverage rate and the total amount of forestry resources in our country. At the same time, there were problems of resource shortage and environmental damage. Based on this, the state vigorously carried out the artificial afforestation project, which is an important measure for the construction and development of ecological engineering and an inevitable trend for the development of forestry. The forestry department and the national environmental department have paid more attention to the protection of forestry ecological environment. While vigorously carrying out forestry afforestation projects, they have optimized the forestry industrial structure, introduced advanced afforestation technology and forestry management model, and strengthened the protection and management of forest resources. In this paper, forestry forestation technology is analyzed and forestry protection measures are discussed to provide reference for the development of forestry in China.
文摘China has a vast territory, but forestry resources are relatively scarce and the distribution is uneven. The per capita share of forestry resources is relatively low. With the rapid development of economy and urban construction, the insufficient protection of forestry resources has also led to the decline of forestry resources which has a very negative impact on the ecological environment. However, in recent years, with the increasing awareness of ecological environment protection, the importance of sustainable development of forestry economy has been fully recognized. It can be said that when the forestry economy develops steadily, it will also promote the local economic construction and improve the living standard of local residents. In the new development period, we should fully coordinate the development of forestry ecological environment protection and forestry economic construction, improve the level of forestry economic construction and further promote the development of forestry ecological environment protection.
文摘At this stage, forestry development and forestry technological innovation are closely linked. In the process of development, we should not only pay attention to the actual needs of forestry development, but also grasp the focus of innovative technology. Specific problems and specific analysis methods should be adopted to make targeted analysis and grasp the relationship between forestry development and forestry innovation technology to promote the innovation and development of agricultural technology and the growth of modern agriculture. With economic benefits, the economy of the forestry unit will have room for steady growth. In this paper, the strategy of modern forestry development and the significance of forestry technological innovation will be explained in detail.
文摘The development and construction level of ecological forestry largely depends on the popularization and application of forestry technology. The application and popularization of forestry technology have a crucial impact on the construction of ecological forestry at the present stage and the development in the future. Forestry technology in forestry development has important and far-reaching significance for future forestry development. Based on this, the significance of forestry technology popularization in ecological forestry construction was analyzed, and the measures to improve the effect of forestry technology popularization and the ways to widely apply forestry technology in ecological forestry construction were discussed.
文摘Based on the actual forestry work in Keshiketeng Banner of Chifeng City, this paper analyzes the main problems existing in the popularization of forestry technology in grass-roots forestry stations, and then puts forward the countermeasures for improvement. At present, the software and hardware of the basic forestry station in Keshiketeng Banner to carry out the forestry technology promotion work are not perfect, the promotion function has certain contradiction, and the personnel structure is difficult to meet the needs of the forestry technology promotion work. The local government should create a software and hardware environment for grass-roots forestry stations to carry out forestry technology promotion, strengthen its technology promotion function, and take measures to optimize the structure of grass-roots forestry station technology promotion personnel.
文摘The development of modern forestry technology can be simply understood as a process of combining science with ecological forestry. If the country wants to promote the development of ecological forestry and improve the economic benefits of forestry, it must innovate modern forestry technology and promote the application of forestry technology in the industry. This paper will focus on the analysis of ecological forestry technology, focusing on the application of forestry technology in the development of ecological forestry, and put forward specific measures for technological innovation of ecological forestry.
