REMOTE SENSING INVESTIGATION AND SURVEY OF LAKE RECLAMATION AND ENCLOSURE AQUACULTURE IN LAKE TAIHU

The ecological environment of Lake Taihu has attracted widespread attention in recent years.Combining field survey and data from the literature,the dynamic changes of land reclamation from 1998 to 2003 in Lake Taihu and enclosure aquaculture from 1990 to 2003 in Lake East Taihu were studied by remote sensing and GIS techniques,and the environmental effects of large-scale land reclamation and excessive enclosure aquaculture in Lake Taihu were analyzed.The results showed that the area of land reclamation was 8.3258 km~(2) in Lake Taihu from 1988 to 2003 and the area of enclosure aquaculture increased 94.0129km~(2) in Lake East Taihu from 1990 to 2003,and reached106.2702 km~(2),accounting for 79.3% of the total area of Lake East Taihu in 2003.Based on the analyse of the situation and problems of the ecological environment,some countermeasures are suggested for the exploitation of the lake.