中文摘要：

利用ASTER卫星可见光和短波红外波段数据，估算了2002年4月12日阿克苏地区地表特征参数（地表温度T、地表反射率α）和植被参数（归一化植被指数NDVI、修正的土壤调整植被指数MSAVI、植被覆盖度P、和叶面积指数LAI等）。结果表明，各种植被参数在沙漠地区较小，而在绿洲中的值较大。同时本文认为ASTER遥感数据有较高的地面分辨率，利用它可以更好地反映地表的植被参数及地表特征参数状况；还指出了ASTER卫星数据在沙漠绿洲中的适用性。

英文摘要：

Using ASTER data on 12 April 2002 from visible and near-infrared band and the short wave infrared band, the land surface variables （land surface temperature, albedo） and vegetation variables （ND- VI, MSAVI, Pv and LAI） over the Akesu area are retrieved. The values of vegetation index are discovered in desert to be less than that in oasis. ASTER remote sensing data have higher resolution and can get the vegetation status reasonably. At the same time ASTER has higher ground resolution, so land surface and vegetation variables can show real land surface variables using its data. The derived surface variables （land surface albedo and surface temperature） over the study area are in good accordance with the land surface status. The experimental area includes variety of land surfaces such as a large area of grassy marshland, some desertification grassland areas, many small rivers and several lakes; therefore these derived parame ters show a wide range due to the strong contrast of surface features. Surface albedois from0 to0.287 in April. Surface temperature ranged from 12 to 38℃ in April. NDVI changed from 0 to 0. 4. MSAVI changed from 0 to 0.25. Pv changed from 0 to 0.11. LAI changed from 0 to 0.25 in April in Akesu area. Further more it points out that ASTER remote sensing data can use in the desert and oasis in this paper.