Evaluation Of Urban Ecosystem Niche-fitness In The Pearl River Delta Region

Ecosystem fitness evaluation thinking has been accept since its introduction(De-Ming Dong, 2001, Han Xiudi, 2000, Yumei, 1996, in Xi, 1992, Li Zizhen, 1997, Min-Woong Sohn, 2001). The urban ecosystem suitability reflected the closeness of the reality niche and the best niche, reflect the urban ecosystem harmony, suitable for urban living, Urban Competitiveness and the capacity for sustainable development. Construction of urban ecosystem suitability index system and Evaluation of the city's ecological system suitability is an important component of the city's the development.Pearl River Delta cities include Guangzhou, Shenzhen, Zhuhai, Foshan, Zhaoqing, Jiangmen, Huizhou, Dongguan and Zhongshan. In 2004, the Pearl River Delta's economic volume accounted for about a tenth of the country around, since the 1980s, the Pearl River Delta in China's economic development has demonstrated the great vitality in the political, economic, social and cultural aspects of unprecedented change, has become China's most economically developed and mature, the most influential Area.This study analyzes and assesses the Pearl River Delta urban ecosystem suitable for the development. Adoption of social statistics methods, and the index system reflected the city structure, the function of cities, urban coordination, and Population Index, infrastructure, urban greening, economic level, material reduction, the allocation of resources, production efficiency, convenience, social security, urban civilization and the sustainability of city. Select data from 1995 to 2004, Implementation of different years and different cities can be compared after data standardized, get urban ecosystem suitability calculation results finally. In addition to the urban ecosystem suitability comparison, this study's another feature is divid the type of urban ecosystem suitable, Analysis of the types of changes and these changes formed by the urban ecosystem suitability of the characteristics.This study introduce city ecosystem sutable concept and use in city ecosystem, construct mathematical model of urban ecosystem suitability, taking into account the impact of weight. These factor including GDP growth, the per capita area of housing, sewage discharge standard rate, every 10,000 people have several doctors, every 10,000 people and universities in the number of students el. And come to the following conclusions: (a) Pearl River Delta urban ecosystem suitability increase. (2) Pearl River Delta cities ecological suitability three vertical stability of the level of development inconsistent. (3) Pearl River Delta urban ecosystem suitability of internal factors - development model. (4) Pearl River Delta urban ecosystem suitable for the survey by the abnormal changes influence.