The Assessment of Ecological Environment Vulnerability in Chongqing.

摘要

In the world, fragile environment is spread widely, and therntypes are diversity. The reasons for formulating that isrncomplicated. Meanwhile, it is a bad environmental performrn[1]. The karst region is affected by the lithosphere,rnhydrosphere, atmosphere and biosphere. It is a fragilernecosystem that is maintained by the cycle of carbon, waterrnand calcium with living creature. Due to its integratingrnregionalized characterization factors and fragile environmentrncondition, environmentalists have regarded "karst" as arnworldwide problem to give great attentions [2]. The characterrnof fragile karst is high sensitivity, low environmental capacity,rnweak anti-interference ability, and strong spatial transferrnability. The rocky desertification is the main manifestationrncharacter in karst above. In this context, the up-to-date GISrntechnology applied to the fragile environment of karstrnresearch is very urgent [3, 4]. Based on this, a karst case studyrnof Chongqing was analyzed to explore the disturbing factorsrnof fragile environment and made a comparative evaluationrnaccording to using the gray correlation method. In order tornrealize the sustainable development of karst environment inrnChongqing Municipality, the dynamic characteristics of thernkarst area in Chongqing and the change trend of karstrnenvironment also were analyzed. These research results willrnprovide a scientific basis for the government to makernthe plans for the regional development, and be muchrnhelpful to improve the regional sustainablerndevelopment.