Temporal Change Detection in Uplands and Gullied Areas Through Satellite Remote Sensing

Abstract

Upland and gullied areas, the potential indicators of desertification. can be identified and mapped reasonably and reliably within ± 10% accuracy through Landsat TM false colour composite images in conjunction with ground truth. Due to increased biotic activity, the areal extent of uplands in the Jodhpur district decreased by 20% over a period of 28 years (1958-86). On the other hand, the areal extent of gullied areas, due to increased fluvial activity increased from 198.5 to 242.0 ha during the same period. These temporal changes indicate that the desertic environmental conditions are deteriorating in the region.