Abstract:

Ecological vulnerability has been highlighted in the studies of global change and sustainable development in recent years. The vulnerability of karst ecological system in southwest china is different from those of other places because of its specialty and the research on vulnerability of karst ecological system has developed more widely and deeply. This article collected, consulted and analyzed related literature data about karst ecological vulnerability of SW China, which have been reported in resent years. It brought a systematic summarization on the basis of research index, methodology and content, the results show: in present, the evaluation on vulnerability of karst ecological system is based on analysis of features and influencial factors as well as building index systems of it which is emphasized. Step analysis is the most popular method. Contents of study have mainly on water, soil, vegetation and the interconnections with other environmental factors. In resent years, a introduction of RS and GIS has made a great progress in research. Nevertheless, there have been some problems about evaluation of vulnerability of karst ecological system to be solved, especially to strengthen research on vulnerability of extreme natural calamities which are related to man-earth relationship in southwest of China. Further more, to introduce proper ecological models to make an evaluation and simulation on regional ecological vulnerability and to provide evidence for ecological conservation, restoration and reconstruction.