干旱区生态环境知识资源中心

Desert ecosystems are unique but fragile ecosystems, mostly vulnerable to a variety of degradational processes like water erosion, vegetal degradation, salinity, wind erosion, water logging etc. Some researchers consider desertification to be a process of change, while others view it as the end result of a process of change. There is an urgent need to arrest the process of desertification and combat land degradation. Under the auspices of the United Nations Convention to Combat Desertification (UNCCD), Space Applications Centre, Ahmedabad has undertaken the task of mapping, monitoring and assessment of desertification carrying out pilot project in hot and cold desert regions in drylands on 1:50,000 scale followed by systematic Desertification Status Mappaing (DSM) of India on 1:500,000 scale. 105.48 mha area is under land degradation /desertification in India. A few studies have been carried out for monitoring the multitemporal changes in the desertification status of some selected areas.