Jinjiang Urban Ecosystem Health Assessment

In recent years, with the accelerating process of urbanization, therefore, a series of unhealthy symptoms have appeared in many cities, such as increasing scarcity of water resources, water pollution, air-quality decline and species extinction, even the threat of human condition. The urban ecosystem health assessment, regulation and prediction have great significance and caused great concern.This article has analyzed and summed up the basic theory of urban ecosystem and reviewed the related research of urban ecosystem health assessment. The urban ecosystem health index system is set up from four aspects, resource, economy, society and environment, and urban ecosystem health assessment standards and levels(sick, unhealthy, sub-healthy, healthy and very healthy) are constructed. Set pair analysis method is applied to assess the health status of Jinjiang during the year of 2008~2013, and then compared with Matter element analysis. The results showed that the health status from 2008~2013 in Jinjiang are all in healthy level and the health index has improved, but lack of coordination between each evaluation indexes. According to the results of predication, Jinjiang urban ecosystem resource and society indexes will experience a steady rise, but economy and environment, so as the urban ecosystem index showed a downward trend.Through analyzing the changes in urban ecosystem health status of Jinjiang, this paper pointed out the main constrains of the development of urban ecosystem health. Therefore, provided suggestions to improve urban ecosystem health, which are adjust the industrial structure, optimization of economic growth, strengthen the protection of water resources and environment, improve public infrastructure and strengthen the comprehensive improvement of urban environment.