Abstract:

For maintaining the health and function of lake ecosystem,it is necessary to manage the lake ecosystem based on the lakespecific environmental condition.Lake ecological sensitivity analysis can quantify the ecological function partitions,which is helpful for the lake ecosystem management.Based on ecological investigation of the lake environment,ecological sensitivity in Futou Lake was evaluated by selecting regional representative factors,utilizing the advanced GIS technology and using the model of multifactor summation with different weight.The results showed that about 320% of the study area was extreme and high sensitivity zones,and about 571% of the study area was moderate sensitivity zones,which indicated that the lake had a relatively high sensitivity.The advices of protection and utilization for these zones were suggested based on the spatial distribution of ecological sensitivity and importance of service.This study firstly applied GIS technology to assess the lake ecological sensitivity,making the spatial overlay of ecological factors effectively.At the same time,this article suggested that selecting additional factors such as aquatic biodiversity,biomass and other factors as the indicators could understand ecological sensitivity more comprehensively.〖