中文摘要：

在遥感和地理信息系统技术支持下，全面分析了精河流域1990年～2001年土地利用的时空变化，并对土地利用变化的驱动因素进行了分析。结果表明：（1）12年来流域315972．99hm^2的土地利用发生了变化，占全流域土地利用面积的33．44％。（2）土地利用类型变化主要表现为低密度草地、农田向荒漠的转化，农田、荒漠向高密度草地的转化，以及荒漠向农田的转化。（3）精河流域土地利用变化受到自然因素和人文因素的共同影响，其中自然因素限制了土地利用的方式，人文因素则是流域土地利用格局变化的直接驱动力。

英文摘要：

Using GIS and RS, the land use spatio--temporal changes were analyzed in Jinghe basin during 1990 and 2001. Moreover, the driving force of land use change was analyzed at large. The conclusions as follows：（1）From 1990 to 2001, the total area of land cover conversion was 315972.99hm2, which was 33.44% of the study area. （2）The main transforming processes included： the low--density grassland and farmland were convert to desert, farmland and desert were convert to high--density grassland, desert was convert to farmland. （3）Land use changes in Jinghe basin were commonly affected by natural and human factors. The natural factors limited the land use pattern. The human factors such as policy, economic development and population growth and so on, were the direct driving force.