Geo-spatial assessment of land cover change in District Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan
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Abstract
Remarkable afforestation has been observed in Province Khyber Pakhtunkhwa (KP), Pakistan. The Billion Tree Afforestation Program (BTAP) has played pivotal role in expansion of green cover. This study is an effort of spatial assessment land cover changes in district Dera Ismail Khan (D.I. Khan) using remotely sensed data. Landsat multi-temporal (2000, 2010 and 2019) images having 30m spatial resolution were downloaded from United State Geological Survey (USGS) open-source geo-database. Supervised classification algorithm was employed in Geographic Information System (GIS) environment to extract vegetation cover, water bodies, built-up area and barren land. Change detection technique is applied and spatial variation in different land cover classes was quantified. The results show that built-up area and vegetation cover has been increased whereas, barren land and water bodies decreased. Analysis revealed that during the selected temporal extent population of the study area has grown due to variety of reasons. The results of the study can be helpful in evaluating the impact of BTAP.
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