Assessing Land Use Land Cover Change Using Remote Sensing: A Case Study From Gazipur District Of Bangladesh

ABSTRACT: Land use land cover change (LULCC) is a major concern now-a-days. Conserving forests and other ecosystems is one of the 17 Global Goals for Sustainable Development. Gazipur district dominating sal forest area in Bangladesh is experiencing extensive LULCC in last few decades. Objective of this study is to quantify the area of land use land cover change over the years. Landsat images of the year 1990, 2001, 2010 and 2019 of Gazipur district were collected for study. Analysis of images from 1990 to 2019, revealed that built-up and homestead were increased drastically. During 1990-2001, 2001-2010 and 2010-2019, built-up increased by 107.51%, 97.21% and 129.18 %, and homestead increased by 42.74%, 39.10% and 12.82%, respectively. Both the forest and crop/fallow lands were decreased where crop/fallow decreased by 2.82%, 13.75% and 11.15% and forest decreased by 40.10%, 13.25% and 14.56%, respectively, in last three decades. Crop/fallow lands were reduced due to conversion of crop/fallow lands to homestead (42909.03 ha) and built-up (5611.23 ha), whereas, forest was shrinking due to conversion of forest to crop/fallow (9091.98 ha) and homestead (9186.12 ha) during 1990 to 2019. 

Keywords: LULCC, land conversion, landsat, remote sensing