Application of GIS for land-use/land-cover change analysis in a mountainous terrain |
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| Authors: | S Ghosh K K Sen U Rana K S Rao K G Saxena |
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| Institution: | 1. G.B. Pant Institute of Himalayan Environment & Development, 263643 (U.P.), Kosi, Almora
2. School of Environment Sciences, Jawaharlal Nehru University, 110067, New Delhi
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| Abstract: | Integration of remote sensing data with other spatial/non-spatial data was carried out using ARC/INFO software package. A simple classification technique was adopted for land cover/land-use change analyses in relation to elevation, slope, aspect and bio-climatic classes. Suitability assessment of land where agricultural extension occurred between 1963 and 1993 was made using GIS software package. Expansion of agriculture and was found to be maximum in 2200-2400 m elevation zone and 20–30° slope classes. When topographic aspects were considered expansion was maximum on south east and west facing slopes. The loss of vegetal cover is estimated to be 15 per cent between 1963–1993. However regeneration of forest was found to be maximum in elevation ranges of 1600–2000 metre and mostly having 20–30° average slope, Land deterioration over the two mapping periods was identified and strategies were suggested to mitigate the problem. |
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