期刊名称：International Journal of Environment and Geoinformatics
电子版ISSN：2148-9173
出版年度：2016
卷号：3
期号：2
页码：45-55
DOI：10.30897/ijegeo.306471
语种：English
出版社：IJEGEO
摘要：Due to inappropriate management and absence of land use planning, land cover change of developing countrylike Bangladesh is a common phenomenon. This land cover change phenomenon will have its tremendous effectif found at a greater extent on natural habitat area for numerous animal and tree species. In this study, land coverchange of Chunati Wildlife Sanctuary (CWS) was assessed from (2005-2015) using Landsat TM (ThematicMapper) and Landsat 8 OLI/TIRS (Operational Land Imager/Thermal Infrared Sensor). ArcGIS v10.1 andERDAS Imagine v14 were used to process satellite derived imageries and assess other quantitative data for landcover change assessment of this study area. Land cover change of the area was identified using NormalizedDifference Vegetation Index (NDVI) technique. Highest NDVI value was found in 2005 (0.71) which denotespresence of moderate-high vegetation cover at that time period. After 2005, highest NDVI value was foundfollowing a decreasing trend (0.56 in 2010 and 0.4 in 2015) which clearly represents the rapid vegetation coverchange in the study area. Almost 7608 hectares of moderate to high density natural forest cover dominated thearea during 2005 but was totally absent in 2015 which may be considered as a great threat regarding properecosystem functioning of CWS. From the findings of this research, it can be easily concluded that the sanctuaryarea has lost its valuable land cover both qualitatively and quantitatively.
