| With the acceleration of urbanization, the contradiction featured more prominently between ecological environment and economic development. The predatory exploitation of resources, ecological damage to the environment and global warming have already caused a series of problems in eco-environment, which attracted attention of many related organizations, as well as experts around the world. Coordinated development of economy and environment is a fundamental requirement for sustainable development, regional resources, the environment, economic relationship between the adaptations of the key elements of sustainable development. Fund projects with the state, "The North and the South Mountains fitness evaluation of global change and sustainable development mode selection", To "strong ecological and weak economies," the typical representative of the Ankang City, In this paper, the quantitative evaluation of the ecological environment and economic development of the coordination degree PSR model development, on this basis, proposed the concept of fitness, quantified and classified. Problems for the region PSR model proposed upgrade strategy to further implement sustainable development in the region.This paper firstly summarizes the domestic and foreign current ecological environment and economic development on the research progress of coordination degree fitness, We clarify the purpose and significant of the study, as well as the brief introduction to the study area. Then with statistical yearbook etc data and material as the basis, using principal component analysis, mathematical model and methods of economics principle, from the coupling relationship between the PSR model based on coordination degree and quantitative analysis of the development status of Ankang PSR fitness.(1) The use of PSR model of economic development in Ankang City, and the ecological environment were evaluated. The results show that:Ankang City, the state categories of indicators generally lag behind the pressure class of indicators. Pressure indicators and pressure class of categories of indicators were used six typical indicators and per capita GDP, the average temperature for the coupling analysis, Pressure categories of indicators and per capita GDP, the average temperature indicators and pressure classes are associated with a high degree of coupling, showing various degrees of "waves" growth, Caused by this growth trend on a simple analysis, but not the full sense of the developed countries fall in line with "U"-type growth, but there are rules show "N" type, "anti-N"-type or inverted "U" left part of other wave-type growth, and there will be a turning point was the peak.(2) The use of principal component analysis on the coordination degree of Ankang City PSR model the main factors were extracted, using the coupling method of coordination degree Ankang City, the type of coordination degree PSR model has been divided. Studies suggest that PSR model of Ankang City, the pressure has gone beyond the actual economic, social and ecological environment can bear on the scope of the general trend of decline in production coordination degree. PSR model for coordination of Ankang City, evaluation results show that in the past 21 years, PSR model coupling significantly different level of coordination, value is relatively dispersed, showed significant volatility. Can be divided into three stages:the first phase 1988-1993, curves gently downward trend; the second phase from 1993-2003, the volatility of the decline stage;third phase, from 2003-2008, started the volatility curve recovery. Showing an overall downward trend of flat, rise slightly in recent years and modest. Coordination degree from the coupling type, the description of the development of both lower overall coordination functions, mainly in the slight offset between the recession and the brink of recession disorders. With economic development, population growth, resource development and industrial structure adjustment and vegetation cover better level of coordination between the ecological environments is relatively stable, but as the impact of human activities, the trend of 0.0054 per year decline gradually to uncoordinated development.(3) The degree of threshold in the coordination of Ankang City, on the basis of PSR model fitness was quantified. Studies suggest that type from a fitness perspective, that both meet the development of the overall adaptive functioning in general, it is a dispersed type which across the range of large. Suited to adapt to high-quality light from across the seven types of adaptation, mainly in the intermediate adaptation, primary between adaptation and forced to adapt, and adapt more than the middle of the type normally distributed. PSR model is significantly different degree of adaptation, values are more scattered, showing significant volatility. There are two phases can be divided: first phase 1988-1993, the curve showing "U" shaped curve left side.In the second phase from 1993-2008, wave-type development, overall slight decline in individual years the stage of recovery. Compare with fitness and coordination, the overall downward trend in the same, but different decline. The basic wandering in the overall level uncoordinated and does not adapt endangered, between relatively stable. There are two main reasons leading to uncoordinated and unfitness development of Ankang City:First, natural causes;the second is man-made causes. Ankang special geographical location, determine its ecological environment is better and more abundant rainfall and suitable climate and vegetation coverage is high, Ankang City, the main causes of climate; In recent years, the dominant man-made, with the rapid economic development in Ankang City, the population along with substantial growth and resource exploitation is led into the social, economic and environmental issues not suited to the offset. Ankang City which named a "strong ecological, weak economy" area seeks coordinated development of adaptation as a constraint to their development bottleneck. |
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