The Urban Comprehensive Capacity Evaluation Of Poyang Lake Ecological Economic Zone Based On Matter-element Model

Due to the city as a regional population agglomeration and economic development center, have a superior resources of region, the development of urban areas play for an important role for the regional development, so the research to optimize the urban development program is important. As industrialization and urbanization accele rated, the number of cities and city scale is in a state of rapid growth, while the global urban population crowded, urban resource consumption, pollution and other urban problems are highlighted, and these problems in turn limits the sustainable developme nt of the city. The urban comprehensive capacity evaluation is to comprehensive research the urban land resources, water resources, transportation, industry development and other load-bearing capacity, point out the restriction factors in urban development, and then put forward the corresponding development countermeasures for each constraint, able to solve the city problems provide good recommendations.Poyang Lake Ecological Economic Zone with 30 percent of the land of the province, creating 60% of the va lue of the province, carrying nearly 50 percent of the province’s population, we can see the Poyang Lake Ecological Economic Zone urban development is essential for the development of Jiangxi Province. In order to explore the limiting factor of urban development of the Poyang Lake Ecological Economic Zone, this paper takes the Poyang Lake Ecological Economic Zone 32 counties(city) as the research unit, based on the city’s comprehensive carrying capacity concept research, on the combination of Poyang Lake Ecological Economic Zone urban development established indicators of bearing capacity index, contain per capita GDP, per capita urban construction land, forest coverage such as 19 indexes, build the matter-element model evaluation method, a comprehensive evaluation of 32 urban comprehensive bearing capacity level of Poyang Lake Ecological Economic Zone, and through the results of the study analyzes the factors restricting the urban development, targeted puts forward good countermeasures and Suggestions of the development of the city, provides reference for the Poyang Lake Ecological Economic Zone development.This article divides the urban comprehensive capacity evaluation level of Poyang Lake Ecological Economic Zone Based into four grades, including urban comprehensive carrying capacity of strong, strong, moderate, weak. The results showed that the urban comprehensive capacity evaluation level of Poyang Lake Ecological Economic Zone are strong, among them the strong comprehensive carrying capacity cities of Poyang Lake Ecological Economic Zone have 6, respectively Nanchang city, Jiujiang city, Jingdezhen city, Xinyu city, Yingtan city, Gongqingcheng city; the strong comprehensive carrying capacity cities have 13, respectively Nanchang, Xinjian, Anyi, Jinxian, Fuliang, Jiujiang, Dean, Wuning, Hukou, Ruichang, Fuzhou city, Wannian, Zhangshu; the moderate comprehensive carrying capacity cities have 9, respectively Leping, Yongxiu, Xingzi, Pengze, Guixi, Gaoan, Dongxiang, Xingan, Fengcheng; the weak comprehensive carrying capacity cities have 4, respectively Dongxiang, Yugan, Poyang, Yujiang. The urban comprehensive carrying capacity more than moderate counties(cities) have 28, accounting for 88% of the entire region. We can judge that the Poyang Lake Ecological Economic Zone city’s comprehensive carrying capacity are in good condition, socio-economic, infrastructure, public services and natural resources, and other conditions can withstand pressure from the development of population, economies development scale, have large potential for future development. From the distribution of urban comprehensive carrying capacity, the city comprehensive carrying capacity level of Poyang Lake Ecological Economic Zone shows the decreasing trend form the city center to the surrounding counties. From the point of impact causes, geographical location, economic basis, policy support dynamics, and population factors are the important affect factors of urban comprehensive capacity level.