Research On Comprehensive Evaluation Of City Ecological In The Yangtze River Economic Belt

With the openness and development of the Yangtze River Economic Belt upgraded to a national strategy,both the city ecological environment and social economic problems increasingly prominent, it is more and more obvious to realize the necessity and urgency of ecological city construction of the Yangtze River Economic Belt. It is an urgent need for cities along the Yangtze River Economic Belt pioneering the development of a new realm in the comprehensive deepening reform and the formation of a new pattern of development to realize the integration of development, characteristic development, green development and transformation.On the basis of domestic and foreign ecological city construction theory research, combined with the specific situation of the eco-city development the Yangtze River economic belt, from economic development, social progress and harmony, ecological environment protection in three aspects to construct the initial evaluation index system, introducing the improved GRNN neural network model to select the indexes, which can comprehensively and objectively reflect the Yangtze River economic belt the true level of eco-city construction.Construct entropy method-set of analysis model and its economic zone 12 center city as the object of study of ecological urban construction comprehensive evaluation. The summary of the full text according to the empirical results, put forward suggestions on the development of the Yangtze River Economic Zone ecological city.According to the empirical results, there are significant differences in the level of ecological city construction of the Yangtze River Economic Belt along the center of the 12 cities. Shanghai deserved as eco-city leader, both economic development and ecological environment protection, its development level is relatively high. Secondly, eco-city construction better basic is located in the Yangtze River economic zone downstream of the Yangtze River Delta city group, and Wuhan as things combined with city of the eco-city construction level is relatively high. Relatively backward to Changsha, Nanchang, Hefei, Chongqing, these regions themselves in the geographic location and the natural environment exists a great disadvantage, and the economic development level is not high, in the face of environmental problems into strength is not great, so the level of ecological city construction is relatively lagging. Overall, although the urban construction and development of Ecological Economic Zone in the entire Yangtze River dimension is not balanced, showing a good development momentum in the downstream, poor posture of the upper reaches of the development, but the construction level tended to increase year by year, in economic development, social progress and harmony and ecological environment environmental protection development co-ordination of the city found itself and other cities in the development gap and reference the development mode, improve the level of ecological city construction.In order to achieve the harmonious steady development of the Yangtze River Economic Belt eco-city Construction, it is need to optimize the development space and layout, enhance economic competitiveness, adhere to the "strategic high-tech industry production-Learning-Research" combination, and pay attention to sustainable environmental protection. With Shanghai as the development leader, the Yangtze River Economic Belt economic society implement entire coordinated development plan in Nanjing, Wuhan, and Chengdu as the center of the "Up-Middle-Down" three metropolitan areas, "East-Center-West" three major economic regions. The government should make efforts to promote the integrated development and collaborative governance of the downstream city group in the Yangtze River economic belt, enhance the industrial upgrading of city group in the middle reaches of the optimization, focus on the division of labor with the strategic high-tech industry and environmental protection industry as the leading industry; The government also should focus on upstream mining group, find out rich resources characteristics, achieve cooperation in low carbon development, promote the development of the third industry, enhance the overall the level of development. Hope that the overall coordination of the development of the Yangtze River Economic belt can attract more people's attention and promote economic-society-nature harmonious development in China's Yangtze River in the future.