针对遥感应用越来越依赖于地物光谱特征的特点，为了更深入地研究干旱区地物光谱反射特征，选择新疆塔里木盆地北缘渭干河–库车河三角洲绿洲为研究区.首先，采用美国ASD Fieldspec HH地物光谱仪测得该绿洲几种典型地物(盐碱地、细沙地、棉花地等、柽柳、骆驼刺、芦苇、盐穗木等以及水体)的光谱数据，分析其光谱特征.其次，采用移动平均法进行了噪声去除，分析实测光谱数据噪声特征，部分消除了高频成分，使光谱曲线较为光滑.同时利用导数光谱技术消除了背景噪声、分辨重叠光谱；利用连续统去除法去掉不感兴趣的吸收谱的影响，使之有效突出光谱曲线的吸收和反射特征.最后，利用ENVI软件建立了渭干河-库车河三角洲绿洲主要地物以及对这些地物进行包络线消除的小型光谱库，从而达到该库服务于渭-库绿洲的地物调查、植被调查、植被分类和环境监测等遥感应用的目的.

The applications of remote sensing depend more and more on the particular futures in the spectrum of ground objects. To obtain the spectral characteristics of arid area, the spectrum of delta oasis of Wigan and Kuqa rivers located in the North of Tarim Basin were collected and studied. The spectral data of typical geo-targets such as saline-alkaline ground, silver sand ground, cotton ground, Tamarix, Alhagi, sparsifolia, Phragmites australis, Halostachys, caspica etc. as well as water body were acquired by the ASD Fieldspec HH spectrometer. These data were then analyzed. The method of moving average, which may depress partially the high-frequency components of the spectrum, was used to eliminate the noise in the spectrum. The spectrum technology of the derivative was implemented to remove the environmental noise and distinguish overlapped spectrum. Finally after continuum removal, spectral curves with highlighted absorption and reflection features were obtained. With these data, the spectral library of primary geo-surface features for the delta oasis of Weigan and Kuqa rivers has been built up with the aid of ENVI software. It can provide services for the vegetation surveys, vegetation classification, and environmental monitoring in this area.