期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI-1/W41
出版社：Copernicus Publications
摘要：Loss of fertile soil by erosion is undoubtedly much higher than weathering and soil formation. A number of studies on estimation of sediment yield have been conducted and many such studies will be planned in future. All these studies are usually carried out in selected watersheds or river basins. A need of country wide Sediment Yield Index (SYI) on a periodical basis is needed. Remote sensing technology has immense potential to yield results in time and cost effective manner. In a study on SYI of a sub- watershed in Rangareddy District, A.P, the IRS LISS III and LISS I data were used to identify this soil and land use characteristics. It was revealed that the SYI had, by and large, similar values in both the cases. This was due to omissions and inclusions of certain spatial units in a mapping process under specific resolution and map scales, thereby providing a scope of covering large areas in a given time frame
关键词：Soil; Watershed; Sediment Yield Index (SYI); Remote Sensing Technology; Cost ; Effective; Time Frame
