Study on dynamic changes of Futouhu wetland based on 3S technology

Taking Futouhu which is the forth largest lake in Hubei Province as the study object, based on RS and GIS technologies, using the Landsat TM remote sensing images in 1991 and in 2005 as well as local chronicles as basic data resources, combined with field surveys and GPS positioning, the data on the dynamic changes of the area and the types of Futouhu wetland from 1991 to 2005 were obtained, and then the driving forces of these changes were analyzed. The results showed that great changes had taken place in the area and in types of Futouhu wetland during the study period, and the most important reason for these changes was human activities. On the other hand, these changes exerted negative influences on Futouhu wetland, which decreased the biodiversity and anti-jamming capability, and also which increased the vulnerability of the ecological environment in this region.