Land Degradation Mapping (LDM) |
Home| Geo-Tag-LDM-Reports | Status Map| Summary | State-District-Wise |
The Objective of Land Degradation Mapping (LDM) is a) To
generate scientific information on degraded lands using Remote
Sensing Techniques on 1:50K b) To Development of degraded land
calls for their reclamation and proper management with specific
information about their nature, extent, spatial distribution and
magnitude of the problem.It deals with mapping of degraded lands
on district basis using remote sensing technique on 1:50,000
scale.It comprises pre-field interpretation of False Color
Composite (Band 2,3,4) derived from IRS LISS II data based on
spectral signatures, field work for ground verification and post
field interpretation followed by random field checking and map
finalization. The mapping has been conceptualized as a four tier
system consisting of delineation of major land use boundaries
from Survey of India (SOI) topographical map and subsequent
updating using remote sensing data followed by mapping of
different kinds of degraded lands and severity of degradation.
The legend of land degradation mapping has been developed
considering the causative factors of land degradation viz., wind
and water erosion, salt affliction, water logging, shifting
cultivation, mining, etc. Four components have been considered
for legend construction for systematic mapping namely
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