塔里木盆地周边地区浅地表土壤含水信息提取方法研究

THE EXTRACTION OF WATER CONTENT INFORMATION FROM SHALLOW SOIL IN AREAS AROUND TARIM BASIN

利用Landsat-7的ETM和Radarsat1号卫星SAR图像,通过主成分分析、ETM与SAR图像的融合处理和混合波段比值等多种方法,在塔里木盆地周边地区提取浅地表土壤中的含水信息,图像上高、中、低含水率区和第四系风积层覆盖下的含水地段分别显示出不同的色调特征。经实地验证,圈定了新的含水地段,取得了明显的信息提取效果。

Using ETM of Landsat-7 and SAR image of Radarsat1 satellite and based on various means such as the principal component analysis, the fusing processing of ETM and SAR images and the ratio of the mixed wavebands, the authors extracted the water content information from shallow soils in areas around the Tarim basin. In the image, the high water content area, the intermediate water content area, the low water content area and the water-bearing sector under the Quaternary aeolian bed show different color tone characteristics. Field verification has led to the delineation of new water-bearing sectors and demonstrated obvious effect of information extraction.