ABSTRACT
Waterlogging, mainly caused by human intervention in natural drainage system, is the major form of physical soil degradation in Central America but is also identified in South America, and other parts of the world. Besides, waterlogging has marked effects on organic matter accumulation and decomposition. Remote sensing data acquired in the visible, near-infrared (NIR) and short-wave infrared regions have shown encouraging results in providing information on spatial pattern of waterlogging. Water typically looks blue or blue-green due to stronger reflectance at the shorter wavelengths, and darker if viewed at red or NIR wavelengths. Aerial photographs have been used for delineation of the land subject to waterlogging. Multi-cropping season spaceborne optical sensor data offer immense potential in delineating waterlogged areas. The potential of the Indian Remote Sensing satellite Linear Imaging Self-Scanning and Landsat-Thematic Mapper data has been evaluated over part of Mahanadi stage-1 command area, eastern India for delineation of waterlogged areas.
