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Land Degradation Mapping at National Level
Information on land degradation is needed for soil conservation / reclamation programs, land use planning, for bringing additional areas into cultivation and also to improve productivity levels in degraded lands. National level land degradation mapping on 1:50,000 scale has been completed for the entire country under Natural Resources Census project. Digital database for land degradation was generated using multi-temporal Resourcesat-1 LISS-III satellite data coupled with ground observations. Classification schema adopted includes land degradation process (8), type (18), severity (3) & land use (4), physiography (4). The Land Degradation classes are Water erosion(Sheet erosion, Rills, Gullies, Ravines), Wind erosion (Stabilised, Partially stabilised , Un-stabilized dunes), Waterlogging (Surface ponding, subsurface waterlogged), Salinisation / alkalization (Saline soils, Sodic soils, Saline-sodic soils, Rann), Acidification (Moderate , Severe), Glacial (Frost heaving, Frost shattering), Anthropogenic (Mining, Brick kiln areas, Industrial effluent affected areas) and Others: Mass movement / mass wastage, Barren rocky/stony waste and Miscellaneous
This project has been carried out under Natural Resources Census programme. Digital database for land degradation was generated using multi-temporal Resourcesat-1 LISS-III satellite data coupled with ground observations. Subsequently the land degradation information has been integrated with forest degradation information from Forest Survey of India (FSI). The final classification schema adopted for this project includes nine land degradation process, seventeen type / severity levels. The Land Degradation classes are Water erosion (Sheet erosion, Gullies/ Ravines), Wind erosion (Loss of top soil, Stabilized / Un-stabilized dunes), Waterlogging, Forest degradation (Forest Degradation, FD with Land transformations), Salinisation / alkalization (salt affected soils – slight, moderate, Severe), Acidification, Glacial (Frost heaving, Frost shattering), Mass movement, Barren rocky Areas, Anthropogenic, and Others.