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The problem of degradation hazards in Arunachal Pradesh - a case study
R.P. Singh
A.B.S. Mahavidyalaya, Bihar
The
problems of degradation Hazards have been studied at different landform units,
delineated by visual interpretation of False Colour Composite of Landsat
imageries of Arunachal Pradesh. The types of degradation are overgrazing,
shifting / jhum cultivation, deforestation, mass movement, depletion of natural
vegetation, erosion of fertile top soil covers, floods, earthquakes, storms,
ecological disturbance etc. are responsible for degradation hazards. The mass
movement types are topple, blockslide, creep, while those of erosion, types are
ravine, gully, rill, sheet etc. The study reveals that 45 per cent of total
geographical area of the state is affected by degradation hazards and extent of
degradation in each physiographic unit of state is calculated with different
parameter.
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