Nansha wetland plays a crucial role in ecological balance of the Pearl River Delta or even Guangzhou. The research, based on researches available, analyzed ecological benefits of Nansha wetland and proposed protection...Nansha wetland plays a crucial role in ecological balance of the Pearl River Delta or even Guangzhou. The research, based on researches available, analyzed ecological benefits of Nansha wetland and proposed protection measures in order to better protect urban wetlands and achieve sustainable development of ecological resources of Nansha wetland.展开更多
The evolvement of IPM has experienced several significant stages. IPM is an ecosystem as a governance unit. It allows the presence of low numbers of pests because a direct or indirect relationship between biological s...The evolvement of IPM has experienced several significant stages. IPM is an ecosystem as a governance unit. It allows the presence of low numbers of pests because a direct or indirect relationship between biological species and their associated environmental living conditions could keep a long-term ecological balance. IPM also emphasizes overall benefits; it is necessary to integrate all kinds of safe, effective, economic, and simple managements as far as possible. When synthesizing and coordinating various managements, effective control object, effective time limit, effective scope, and effective degree of the individual method should be analysed first. The ultimate goal of IPM is for the sustainable development of agriculture. In the future IPM system engineering, crop resistance, the role of natural enemies, agricultural control, and the application of biological control technologies will be greatly strengthened, and the role of chemical pesticides will be significantly reduced. Safe, effective, and long-lasting control of pest populations will be below the level of harm caused, which could protect the ecological environment and the health of people and livestock, and promote the development of production.展开更多
An index system is constructed to measure the integration of environmental protection and high-quality economic development in different cities in China from 2006 to 2018,and to explore its evolution and driving force...An index system is constructed to measure the integration of environmental protection and high-quality economic development in different cities in China from 2006 to 2018,and to explore its evolution and driving forces.From the three dimensions of integration foundation,integration depth and integration performance,this paper adopts AHP-Entropy combined weighting method to build the integration index.In addition,this paper comprehensively uses exponential decomposition,comparative analysis and o convergence and divergence analysis to explore the spatio-temporal differences and dynamic mechanisms.The results show that the overall integration level of China's cities continues to improve,of which technological progress is the core driving force,the transformation of development mode is a crucial path,and the intensity of environmental governance is the key support.The evolution and driving forces of the integration level of first-tier cities,new first-tier cities and other cities are significantly different.Promoting integration level is a critical way for resourcebased cities to break the resource curse.Urban agglomeration integration led by the growth pole can effectively improve the overall regional integration level.This paper innovates that the relationship between environmental protection and high-quality economic development is discussed from the perspective of integration,and the paths to improve the integration level of resource-based cities and urban agglomerations are identified.This paper is helpful to clarify the differences in integration levels and driving forces of different cities,and provide a reference value for the precise implementation of high-quality development and“beautiful China.”展开更多
Solid Waste Management (SWM) system in Basrah has deteriorated recently to the point that only limited waste collection is undertaken in certain urban areas and disposal is largely to uncontrolled dump sites. In this ...Solid Waste Management (SWM) system in Basrah has deteriorated recently to the point that only limited waste collection is undertaken in certain urban areas and disposal is largely to uncontrolled dump sites. In this study, the technical, economical, and environmental aspects of three SWM scenarios were investigated aiming to compare the scenarios and select the most appropriate one for implementation. Scenario 1 was to consider waste disposal into a sanitary landfill. Scenario 2 added waste transportation to transfer station before disposal to a sanitary landfill. Scenario 3 considered waste sorting, recycling and composting followed by landfill disposal in an integrated treatment disposal facility. The current open dumping practice was considered as the baseline scenario. According to economic analysis, the benefits from the revenues of selling the produced recyclables and compost did not improve the ranking of scenario 3. However, scenario 3 has gained positive recognition due to the environmental benefits of waste recycling. Therefore, final recommendations were in favour of scenario 3, which has been approved by the UNICEF, as well. Currently the recommended scenario is under implementation in Basrah, Iraq.展开更多
文摘Nansha wetland plays a crucial role in ecological balance of the Pearl River Delta or even Guangzhou. The research, based on researches available, analyzed ecological benefits of Nansha wetland and proposed protection measures in order to better protect urban wetlands and achieve sustainable development of ecological resources of Nansha wetland.
基金Supported by China Agricultural Industry Research System(CARS-12)
文摘The evolvement of IPM has experienced several significant stages. IPM is an ecosystem as a governance unit. It allows the presence of low numbers of pests because a direct or indirect relationship between biological species and their associated environmental living conditions could keep a long-term ecological balance. IPM also emphasizes overall benefits; it is necessary to integrate all kinds of safe, effective, economic, and simple managements as far as possible. When synthesizing and coordinating various managements, effective control object, effective time limit, effective scope, and effective degree of the individual method should be analysed first. The ultimate goal of IPM is for the sustainable development of agriculture. In the future IPM system engineering, crop resistance, the role of natural enemies, agricultural control, and the application of biological control technologies will be greatly strengthened, and the role of chemical pesticides will be significantly reduced. Safe, effective, and long-lasting control of pest populations will be below the level of harm caused, which could protect the ecological environment and the health of people and livestock, and promote the development of production.
基金the National Social Science Fund of China(No.18ZDA050)“Research on the Mechanism,Path and Policy System of the Integration of Environmental Protection and High-Quality Economic Development.”。
文摘An index system is constructed to measure the integration of environmental protection and high-quality economic development in different cities in China from 2006 to 2018,and to explore its evolution and driving forces.From the three dimensions of integration foundation,integration depth and integration performance,this paper adopts AHP-Entropy combined weighting method to build the integration index.In addition,this paper comprehensively uses exponential decomposition,comparative analysis and o convergence and divergence analysis to explore the spatio-temporal differences and dynamic mechanisms.The results show that the overall integration level of China's cities continues to improve,of which technological progress is the core driving force,the transformation of development mode is a crucial path,and the intensity of environmental governance is the key support.The evolution and driving forces of the integration level of first-tier cities,new first-tier cities and other cities are significantly different.Promoting integration level is a critical way for resourcebased cities to break the resource curse.Urban agglomeration integration led by the growth pole can effectively improve the overall regional integration level.This paper innovates that the relationship between environmental protection and high-quality economic development is discussed from the perspective of integration,and the paths to improve the integration level of resource-based cities and urban agglomerations are identified.This paper is helpful to clarify the differences in integration levels and driving forces of different cities,and provide a reference value for the precise implementation of high-quality development and“beautiful China.”
文摘Solid Waste Management (SWM) system in Basrah has deteriorated recently to the point that only limited waste collection is undertaken in certain urban areas and disposal is largely to uncontrolled dump sites. In this study, the technical, economical, and environmental aspects of three SWM scenarios were investigated aiming to compare the scenarios and select the most appropriate one for implementation. Scenario 1 was to consider waste disposal into a sanitary landfill. Scenario 2 added waste transportation to transfer station before disposal to a sanitary landfill. Scenario 3 considered waste sorting, recycling and composting followed by landfill disposal in an integrated treatment disposal facility. The current open dumping practice was considered as the baseline scenario. According to economic analysis, the benefits from the revenues of selling the produced recyclables and compost did not improve the ranking of scenario 3. However, scenario 3 has gained positive recognition due to the environmental benefits of waste recycling. Therefore, final recommendations were in favour of scenario 3, which has been approved by the UNICEF, as well. Currently the recommended scenario is under implementation in Basrah, Iraq.
