Analysis of the Land-using and Environmental Effect in the Middle Reach of the Tarim River

Based on remote sensing and GIS technology,in the paper,the author firstly analyzed the land covering change in the middle reach of the Tarim River from 1992 to 2000 period and the information on the land use/change of the region was required.And then through the further analysis of geographic,climatic and hydrologic factors affecting the region,it was concluded that:the human population's increasing resulted in farming-land increasing so that the duty-water and waste-water discharge were increased,which caused the water requirement reduced and the quality of water decreased in Tarim River;the area of a sharp drop vegetation influenced the function of ecosystem service of the middle and lower reach of the Tarim River;the area of land desertification was expanded.Finally,in order to limit the deterioration of the ecological environment of the middle reach of the Tarim River,the author put forward several reasonable proposals,such as: the application of ultrasound of water resource,the control of population growth,the restoration of the natural system,the readjustment of industrial structure,the prevention of desertification and so on.