SPATIO-TEMPORAL ANALYSIS OF LAND USE AND LAND COVER CHANGES IN BARGUNA DISTRICT OF BANGLADESH USING

Detecting changes in land use and land cover (LULC) via remote sensing techniques is a crucial and time-saving approach, especially when dealing with natural disasters. This research focused on mapping and analysing LULC changes in Bangladesh's Barguna District during the years 1990, 2000, 2010, and 2017. Throughout the years, data from Landsat 5 TM and 8 OLI TIRS were acquired for this study. For each of the years indicated, the main Normalized Difference Vegetation Index (NDVI) was used to map the four classifications (water, residence, agricultural field, and mangroves). From 1990 to 2000, it was discovered that water (0.86%), agricultural fields (3.63%), mangroves (9.97%), and residence (14.46%) all rose, whereas residence (14.46%) dropped. However, between 2000 and 2010, it was discovered that water (1.05%), habitation (11.48%), and agricultural fields (7.37%) and mangroves (5.07%) rose, which could be attributed to the two catastrophic natural disasters in 2007 (the extreme super cyclone Sidr) and 2009. (the cyclone Aila). From 2010 to 2017, water (0.90%), mangroves (15.45%), and residence (7.10%) and agricultural field (9.24%) were raised, while residence (7.10%) and agricultural field (9.24%) were decreased. Finally, from 1990 to 2017, the general scenario showed that water (2.82%), mangroves (20.35%), and residence (10.08%) and agriculture field (13.09%) increased, while residence (10.08%) and farm field (13.09%) dropped. It was discovered that between 1990 and 2017, mangroves vegetation rose from 9.32 percent to 19.02 percent, indicating that the government had taken steps to plant mangroves, resulting in 348.26 km2 of afforestation. The study's findings and created maps will benefit community members, relevant departments, national and international planners, and community researchers.

Please see the link :- https://www.ikprress.org/index.php/JOGEE/article/view/6686