介绍了综合运用RS、GIS和GPS（3S）技术对新疆塔里木河流域中下游土地覆盖与土地利用、植被指数、人口经济等主要生态环境要素的遥感时序信息提取、GIS数据分析和GPS野外定点检测。总结出塔里木河流域中下游地区从1990-2000年的11年间农业用地面积增加了505.433km^2，整个自然/半自然植被的面积减少了943.089km^2，水体面积增加了80.477km^2，塔河中下游天然植被大面积衰败和死亡，尤其是胡杨林面积锐减，致使沙漠化面积不断扩大。初步提出了生态环境修复和治理建议。通过研究还建立了新疆塔里木河流域中下游3S生态环境动态监测系统。

The entironment problem of Talimu Basin have been regarded highly. Many experts and scholars had investigated and researched the Talimu Basin. In the basin，there are 5 reservoirs. They intercepted large number of supplied waterhead. In this background，we began this research. This article introduces a kind of method. This method is to syntheticallly use RS，GIS and GPS（3S）technology and retrieve remote sensing information according to time sequence about land use / cover，Ⅵ（vegetation index），and population economy etc. in the middle and lower reaches of Talimu River. In this article，the data were analyzed by using GIS technology and the field sizes were investigated by using GPS instrument . A conclusion was concluded that in the past 11 years from 1990 to 2000，in the region of the middle and lower reaches of Talimu river，the area of farmland had been increased 505.433km2，the area of nature / planted vegetation had been reduced 943.089km2，and the area of water body had been increased 80.477km2 . The area of desert of the middle and lower reaches of Talimu river is increasing continually. The main reason is the large number of nature vegetation was died，especially the area of the Huyang trees was declined. Finally，some suggestions were make to recover and father fragile ecosystem.