Dynamics of land conversion in Kathmandu district
Author(s): Mukunda Marasini, Yogendra Yadav, Ram Asheshwar Mandal and Anil Regmi
Abstract: Land cover change detection and updating a land cover map is prerequisite to understand the land cover change dynamics and for the sustainable management of forest resources. Urbanization has serious effect on the forest area in capital city but such studies are limit in Nepal. Thus this study was objectively conducted to assess land use land cover in Kathmandu district using spatio-temporal technique. Imageries of Thematic Mapper of 2000, 2010 and OLI 8 of 2021 were downloaded from USGS earth explorer. The maximum likelihood supervised classification was performed to classify the imageries of 2000, 2010 and 2021. The accuracy assessment of was performed of all the classified map. The maps showed the status and change detection in Forest, Bareland/Road, and Settlement and Water bodies from 2000 to 2010, from 2010 to 2021. The classified map of Kathmandu district showed that the area of Forest, Bareland/Road, Settlement and Water bodies was 19087.21, 14500.09, 3597.69 and 4160.03 ha respectively in 2000. The area of Forest, Bareland/Road, Settlement and Water bodies was 11489.35, 21200.51, 4390.42 and 3415.66 ha respectively in 2010. Similarly, the classified map of 2021 showed that the area of Forest, Bareland/Road, Settlement and Water bodies was 12732.08, 17917.47, 7034.4 and 3661.88 ha respectively in 2021. Over all accuracy of thematic was 76.47, 82.92 and 93.16% of the classified map of Kathmandu district of 2000, of 2010 and of 2021 respectively. The forest area was decreased by 7597.86 ha between 2000 and 2010, this was decreased by 1242.73 ha between 2010 and 2021 which was over all decreased by 6355.13 between 2000 and 2021. Barenland/road was increased by 3417.05 ha between 2000 and 2021 and about same increasing pattern was recorded with 3436.71 ha between 2000 and 2021. The effect of road construction, bare land and new settlement was clearly recorded in 21 years period.
Pages: 17-22 | Views: 345 | Downloads: 52Download Full Article: Click HereHow to cite this article:
Mukunda Marasini, Yogendra Yadav, Ram Asheshwar Mandal, Anil Regmi. Dynamics of land conversion in Kathmandu district. Int J Geogr Geol Environ 2019;1(2):17-22.
