| The problems of ecological environments in the present human society became a world problematigue, indicating the degradation of ecological environments would give the great impacts on the existence of human beings and social sustainable development. After entering the World Trade Organization (WTO), there have been many needs of governmental functions for China. And the government should be responsible for the ecological issue (pollution, desertification and dust storm) that can noe be solved by the matket mechanisms.Due to the characteristic of ecological environments as the specific resource, it is necessary for the governments to reinvestigate the results of ecological environment problem from a new view, and play an inevitable and important role in improving this issue. During these 30 years China is facing on a paradox of natural environments as economy rising, which resulted from no hormony between economic production and social life incluging governmental behavior. Fortunately, the central and local governments in China pay more and more attentions to ecological environments. However, how to develop the sound theoretical basis of the role and effectiveness in the ecological environment construction, how to evaluate the supporting capacity of government in solving the problem, and how to choice the applicable governmental behavior strategies for the cardinal ecological environment problem are of importance in ecology, environmental science and relevant social science, and also for the practice.For the thesis, the supporting capacity of government in solving ecological environment problems is the core subject for study.Firstly, there have been the deep analysis and explanation in the main aspects of ecology and social ecology, and put forward a new concept of supporting capacity, which aims to realize the high biological production of natural ecosystems or artificial ecosystems, meanwhile, enhance the stability of the existence and production for human beings, and finally achieve the sustainability of society-economy-nature.Secondarily, a multiple evaluation system for the supporting capacity of government in solving ecological environment problems, including basic principle, conceptual framework, indicator system and AHP model, was established by using Fuzzy mathematics and Analytic Hierarchy Process (AHP).Thirdly, the author gave a demonstrated research on the supporting capacity of government in the representative areas in Jilin Province-Baicheng in the western part, and Tonghua and Yanbian in the eastern part with this multiple evaluation system. And it showed that, for the the supporting capacity of government, the importance ordination for impacting factors as the followings: core supporting capacity > outer impacting capacity; governmental function>ecological environmental carrying capacity>governmental behavior effectiveness; population pressure > ecological background > degradation of soil > making-decision of law and policy>active ability of government>productivity>macro harmony>response ability of government > citizen education > farmer professional or technology ability.Lastly, the applicable governmental behavior strategies for the cardinal ecological environment problems in the whole Jilin Province was put forward based on the ecological environmental circumstances and their impacting factors. It should be emphasized that the main fuctional role of governments will play in the following aspects incluing how to make the rules and laws, how to collaborate or coordinate the internal production, oversea investment and trade increase for reducing ecological envrinments, and how to determine and administrate the technical standards for ecological environment conservation, and carry out the complete strategy of sustainable development in China.There are four aspects to be considered as the new novel points as the followings: (1) Define the new concept of supporting capacity of government, which covers the functional role and its behavior effectiveness during the ecological environmental construction. (2) Systematically analyze and explain in the main aspects of ecology and social ecology, and their evaluation approaches such as ecology, resource, environment, and ecological sustainability. (3) Determine the evaluation principle and the framework of indicator system (3 layers and 14 indicators), and it is the first time to adopt and improve AHP model for supporting capacity of government. (4) Give the applicable governmental behavior strategies for the cardinal ecological environment problems in the whole Jilin Province...
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