Study On Ecosystem Analysis, Evaluation And Ecopolis Construction Of Zhengzhou

Cities are centers where the mankind gathers and the products of the development of politics, economy, science and technology of human society in a certain stage; they are also the assembled places of material and spiritual civilization. So sustainable development of cities is very important in the development process of the society. But sustainable development of cities has been more and more hindered since 1960s because of the deterioration of the environment, resource exhausting, the severe increasing of population and water pollution in the process of their own development. Therefore, it is very important to regard the cities, as the compound ecosystem of society - economy-nature, and it is also a new mode of thinking to study urban problems from the angle of ecology. Because the history of research on cities urban ecosystem are is relatively short, and the theories and methodology questions are still at the exploring stage, the basic theory frame of the urban ecosystem has not been totally set up yet, especially the instance studies have just begun. In view of this, this paper has analyzed and appraised the ecosystem of Zhengzhou city theoretically in detail and put forward the concrete measures of building the ecological city in Zhengzhou. Except for the summary, the paper includes about 50,000 words, and it is divided into five parts altogether. First part: forward. The text introduced the historical background of ecological system research of the city and the analysis and evaluation about the urban ecosystem both at home and abroad, and the current situation of ecological urban construction at first; then the relevant concepts of the urban ecosystem and the basis of the ecological city construction in Zhen Zhou have been introduced; finally the materials source of the thesis are proposed. Second part: the analysis of urban ecosystem. At first some have been analyzed to the characteristic, structure and function of the urban ecosystem from the theory and methodology, on the basis of this analysis, it have analyzed in detail the structure of the ecosystem of Zhengzhou city, and then proposed that building the ecological city should appraise to the urban ecosystem. Third part: Evaluations of the urban ecosystem. Originally some contents appraised to the urban ecosystem have been carried on research, then propose proposed the urban ecosystem and appraise appraised the method, in the evaluation method, the principle of confirming the evaluation index, the choice of the standard value of the evaluation index, the choosing of model of thinking and the calculation of the composite index of urban ecosystem are introduced emphatically According to the evaluation model of urban system , this paper calculate the ecosystem of Zhengzhou city with the three second index such as structure, function and coordination, and get the comprehensive ecological index of Zhengzhou, and finally it appraised the ecosystem of Zhengzhou according to this index, and has analyzed the result. Fourth part: The ecological urban construction of Zhengzhou. According to the analysis and evaluation result on ecosystem of Zhengzhou this paper proposed that the construction of ecological city in Zhengzhou should start from 5 aspects as follows. They confirm confirming the capacity of suitable population, strengthening environmental construction, strengthening infrastructure construction, perfecting road traffic system, planning and utilizing every land of Zhengzhou reasonably using scientific development view and adjusting industrial structure, etc.. Fifth part: conclusion. It is mainly to get the conclusion of the study result through analyzing, appraising of the urban ecosystem and the city ecosystem construction of Zhengzhou.