龙感湖湿地生态功能的生物和化学记录

Biological and Chemical Records About the Ecology Function of Wetland in Longgan Lake

湖滨湿地是陆地和湖泊水体的连接带,具有重要的生态功能．通过对长江中游湖泊龙感湖湖滨湿地和湖泊沉积物中化学元素和生物硅藻的研究,表明湖滨湿地对入湖物质具有明显的拦截作用和生态功能．由于人类活动对龙感湖湿地的破坏,减弱了湿地对流域物质的拦截,造成了湖泊生态功能的退化．

Wetland is the conjunction of lake and terrene and has important ecology function. Through the studies on the distribution of chemical elements and the diatom assemblages in longgan Lake sediments,we have found that the wetland has obviously buffer function to the materials form land to lake and is effeetive to keep a good lake eeology. Human activities have destroyed the wetland in the area of Longgan Lake,weaken the ecology function of wetland,and accelerated the deterioration of lake ecology.