Integration of Remote Sensing and GIS to Assess Vulnerability of Environmental Degradation in North-Western Bangladesh
Integration of Remote Sensing and GIS to Assess Vulnerability of Environmental Degradation in North-Western Bangladesh作者机构：Center for Environmental Change Studies and Management Dhaka Bangladesh Department of Sustainable Development Environmental Science and Engineering KTH-Royal Institute of Technology Stockholm Sweden Department of City and Regional Planning King Fahd University of Petroleum and Minerals Dhahran KSA
出 版 物：《Journal of Geographic Information System》 (地理信息系统（英文）)
年 卷 期：2015年第7卷第5期
页 面：494-505页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：GIS Remote Sensing Landsat DEM Soil Degradation Bangladesh
摘 要：Environmental degradation is a burning issue in Bangladesh. The degradation process is extremely acute in the north-western part of Bangladesh due to many environmental and anthropogenic reasons. However, initiative of research work on this issue is very crucial and urgent for regional and local planning and management. In this paper, Nachole and Niamotpur Upazilas were considered as the study area to identify and quantify environmental degradation using an integrated Geographic Information System (GIS) and Remote Sensing (RS) technique. The results of the study reveal that the area is one of the most vulnerable areas in terms of land degradation that already affected local agriculture, biodiversity, water supply and overall socio-economic livelihoods. From the modelling results, about 66,301 hectares (90%) of land are vulnerable to land degradation, of which 24,736, 40,309 and 256 hectares of land were classified as severely, highly, and moderately vulnerable areas respectively. The overall image classification accuracy for all the resultant images was 95.40% while kappa coefficient was 0.94.
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