The newly invented farming method, Fenlong technology, uses self-propelled powder-ridging mechanical screw-type drill for the deep-cultivation and deep tillage of soil, and it can enhance the double tillering depth th...The newly invented farming method, Fenlong technology, uses self-propelled powder-ridging mechanical screw-type drill for the deep-cultivation and deep tillage of soil, and it can enhance the double tillering depth than the conventional tillage. Moreover, the tilth soil is uniform in size and in small, broken bits and loose. It expands the new soil ＂four warehouses＂ （namely soil nutrient warehouse, water warehouse, oxygen warehouse and microbial warehouse）, and under the conditions of ＂three no increase＂ in chemical fertilizer and pesticide, irrigation water and labor input, various crops show a increase of 10%-30% in yield （average increase by 25.48% in the 23 rice, wheat and corn planting areas of several provinces）, 5% in quality, and 1 time in water retention. And the sustainable production-increasing ef- fect lasts 2-3 years after once Fenlong tillage, with the comparative efficiency reaching about 20%. It is suggested using Fenlong to activate the arable land, saline land grassland and rivers resources, so as to drive the construction of green agriculture ＂3＋1＂ industrial system, which can promote the realization of the increases in available agricultural resource stock, quality food resource stock and available water resource stock in China and even in the world, realize the ＂two responses＂ to ecological environment deterioration and climate warming, and achieve the harmonious coexistence of human beings and nature.展开更多
Shrimp aquaculture is an important source of revenue for the state of Sarawak, Malaysia. However, there were concerns on the impact of shrimp farming on the mangrove ecosystem due to the discharge of shrimp pond water...Shrimp aquaculture is an important source of revenue for the state of Sarawak, Malaysia. However, there were concerns on the impact of shrimp farming on the mangrove ecosystem due to the discharge of shrimp pond water to the surrounding environment and potential self-pollution through the intake of surrounding water for the shrimp ponds. Therefore, the objectives of this study were to determine the water quality of the harvesting pond water and quantify the pollutants loadings. Samplings were conducted in three ponds and three channels near the pond outflow in a commercial shrimp farm during complete draining of water at harvest. Results indicated that TSS and Chl-a were high in both the ponds and channels. Total ammonia-nitrogen was the predominant form of the inorganic nitrogen and the mean values in both the ponds and channels were more than 1 mg/L which exceeded the maximum recommended for fish. Therefore, the water quality of the ponds and channel indicate that pond effluent should not be discharged directly into the surrounding environment but treated and nutrients recovered. Loads of total suspended solids, BODs, inorganic nitrogen, ammonia nitrogen, soluble reactive phosphorus and Chl-a of the effluent were quantified.展开更多
Development of green economy is an important way to promote the construction of ecological civilization which needs the support of policy system. Therefore, our country should make the green industry and green fiscal ...Development of green economy is an important way to promote the construction of ecological civilization which needs the support of policy system. Therefore, our country should make the green industry and green fiscal policy supporting system perfect, accelerate the reform of investment and financing mechanism, and improve the system of green finance policies. Only by establishing scientific green economic policy support system, can our country promote the construction of ecological civilization.展开更多
Determining the carrying capacity of ecological resources is the key to finding contradictions between human activities and the environment,as well as the links between economic growth,environmental protection and soc...Determining the carrying capacity of ecological resources is the key to finding contradictions between human activities and the environment,as well as the links between economic growth,environmental protection and social development.In recent years,the carrying capacity of the ecological environment has been extensively studied at home and abroad.Through extensive literature research and analysis,this paper discusses the current status and main problems of recent research on the carrying capacity of the ecological environment in China.For example,two of the main problems are that:1)the concepts and connotations are not clear enough,and 2)the research content is not systematic enough.This is followed by a summary of the evaluation index system and main calculation methods.Finally,according to the research status and development trends at home and abroad,the possible direction for the development of this research field in the future is proposed.展开更多
基金Supported by the Major Special Project for Science and Technology of Guangxi Province(Guike AA16380017)the Key Science and Technology Planning Project for Agriculture of Guangxi Province(201503)the Achievements Transformation of Guangxi Academy of Agricultural Sciences(Nongzhuancheng 201405)~~
文摘The newly invented farming method, Fenlong technology, uses self-propelled powder-ridging mechanical screw-type drill for the deep-cultivation and deep tillage of soil, and it can enhance the double tillering depth than the conventional tillage. Moreover, the tilth soil is uniform in size and in small, broken bits and loose. It expands the new soil ＂four warehouses＂ （namely soil nutrient warehouse, water warehouse, oxygen warehouse and microbial warehouse）, and under the conditions of ＂three no increase＂ in chemical fertilizer and pesticide, irrigation water and labor input, various crops show a increase of 10%-30% in yield （average increase by 25.48% in the 23 rice, wheat and corn planting areas of several provinces）, 5% in quality, and 1 time in water retention. And the sustainable production-increasing ef- fect lasts 2-3 years after once Fenlong tillage, with the comparative efficiency reaching about 20%. It is suggested using Fenlong to activate the arable land, saline land grassland and rivers resources, so as to drive the construction of green agriculture ＂3＋1＂ industrial system, which can promote the realization of the increases in available agricultural resource stock, quality food resource stock and available water resource stock in China and even in the world, realize the ＂two responses＂ to ecological environment deterioration and climate warming, and achieve the harmonious coexistence of human beings and nature.
文摘Shrimp aquaculture is an important source of revenue for the state of Sarawak, Malaysia. However, there were concerns on the impact of shrimp farming on the mangrove ecosystem due to the discharge of shrimp pond water to the surrounding environment and potential self-pollution through the intake of surrounding water for the shrimp ponds. Therefore, the objectives of this study were to determine the water quality of the harvesting pond water and quantify the pollutants loadings. Samplings were conducted in three ponds and three channels near the pond outflow in a commercial shrimp farm during complete draining of water at harvest. Results indicated that TSS and Chl-a were high in both the ponds and channels. Total ammonia-nitrogen was the predominant form of the inorganic nitrogen and the mean values in both the ponds and channels were more than 1 mg/L which exceeded the maximum recommended for fish. Therefore, the water quality of the ponds and channel indicate that pond effluent should not be discharged directly into the surrounding environment but treated and nutrients recovered. Loads of total suspended solids, BODs, inorganic nitrogen, ammonia nitrogen, soluble reactive phosphorus and Chl-a of the effluent were quantified.
文摘Development of green economy is an important way to promote the construction of ecological civilization which needs the support of policy system. Therefore, our country should make the green industry and green fiscal policy supporting system perfect, accelerate the reform of investment and financing mechanism, and improve the system of green finance policies. Only by establishing scientific green economic policy support system, can our country promote the construction of ecological civilization.
基金The National Key Research and Development Project(2018YFD0800201)
文摘Determining the carrying capacity of ecological resources is the key to finding contradictions between human activities and the environment,as well as the links between economic growth,environmental protection and social development.In recent years,the carrying capacity of the ecological environment has been extensively studied at home and abroad.Through extensive literature research and analysis,this paper discusses the current status and main problems of recent research on the carrying capacity of the ecological environment in China.For example,two of the main problems are that:1)the concepts and connotations are not clear enough,and 2)the research content is not systematic enough.This is followed by a summary of the evaluation index system and main calculation methods.Finally,according to the research status and development trends at home and abroad,the possible direction for the development of this research field in the future is proposed.
