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 Part 4
出版社：Copernicus Publications
摘要：The study was aimed at evolving and standardizing the methodology for desertification status mapping using satellite data for the sub-humid regions under Thematic Programme Network-1 (TPN-1) of Regional Action Programme (RAP) formulated by UN Convention to Combat Desertification (UNCCD). Panchkula district of Haryana was selected as the case study. A reconnaissance survey of the study area was conducted to assess the type, extent, cause and possible consequence of the problem which helped in standardizing the image signatures. It was also used in generating an interpretation key. A number of parameters related to desertification that are amenable to remote sensing and conventional survey were identified and listed. Preparation of Desertification Status Maps (DSM) was an ordered process of certain logical steps carried out using visual interpretation of Satellite data (IRS-1D LISS-III geo-coded FCC paper prints) followed by ground truth data collection at selected points and then finalization of preliminary DSM. Latest cloud free satellite data for kharif and rabi season was acquired from NRSA, Hyderabad. The maps prepared were evaluated for their quality based upon spatial accuracy, classification accuracy and cartographic accuracy. A digital database of the information generated was created in GIS. The study revealed that 47.5 per cent of the total geographical area of the district faces desertification. Five major land uses viz. dryland agriculture, irrigated agriculture, land with scrubs, forest areas and urban areas were found to be affected by desertification. About 32% of the total desertified area is scrublands while 30% comes under dryland agriculture. Urbanization constituted 18% of the desertified lands. Study established that satellite data is very useful in the preparation of three tier DSM maps indicating land use/ land cover, process and severity of desertification
关键词：Desertification; Remote Sensing; IRS-1D; GIS; Dry Sub-humid; Land use/ land cover
