Evaluation Of Urban Comprehensive Carrying Capacity Of Beijing-Tianjin-Hebei Region

At present,the Beijing-Tianjin-Hebei urban agglomeration is in the process of rapid development.With the improvement of urbanization level and the rapid growth of urban population,the scale of the city is constantly expanding.However,a series of problems,such as the urban public resources strain and the decline of environmental quality,have been brought into being.These problems have affected the sustainable development of cities and become the shackles of urban development.The improvement of urban comprehensive carrying capacity is the key to solve the problems of urban development.Urban comprehensive capacity to measure the level of urban sustainable development,the measure of the relationship between urban development and load threshold,so research the bearing capacity of urban comprehensive evaluation and ascension has very strong practical significance.Under the background of the coordinated development of Beijing-Tianjin-Hebei,combined with current situation of the development of beijing-tianjin-hebei urban agglomeration,this paper focuses on study of Beijing-Tianjin-Hebei urban comprehensive carrying capacity,in order to locate the respective advantages and short bearing plate,integrates urban carrying capacity of three cities from the perspective of spatial collaboration,solves the bottleneck of development,in order to optimize the coordination level,enhance comprehensive carrying capacity and realize the beijing-tianjin-hebei urban agglomeration layout is more reasonable.Based on 13 cities as the research area of the Beijing-Tianjin-Hebei region,according to?the program for the development of the region?,they are divided into the central core area,the eastern coastal development area,the expanded function in northwest area and southern ecological headwater,based on the 10 years data from 2007-2016,selected resources and environment,economic development and social public service as three first-level indicators,resources,ecology,macroeconomic,microeconomic,urban transportation and infrastructure services as six secondary indexes and 19 specific indicators to build the bearing capacity of urban comprehensive evaluation index system.Firstly,the weight of each index layer is calculated by the method of entropy weight method.Secondly,using the nonlinear weighted comprehensive evaluation method to measure and compare the comprehensive carryingcapacity level.Thirdly,the development status of the carrying capacity of every city in recent ten years is analyzed through the TOPSIS model.Finally,combined with the above analysis results,the countermeasures and suggestions for improving the comprehensive carrying capacity of Beijing Tianjin Hebei are discussed.