Journal
OCEAN & COASTAL MANAGEMENT
Volume 245, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ocecoaman.2023.106859
Keywords
Landuse dynamics; Socioeconomic factors; Shrimp farming; Coastal districts; Bangladesh
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Socio-economic factors and saltwater intrusion are the main drivers of land use change in the southwestern coastal districts of Bangladesh. This study used remote sensing images and identified significant relationships between socio-economic factors and land use dynamics. The expansion of shrimp farming has led to the conversion of a large area of land from rice cultivation or uncultivated, highlighting the importance of land use policies and sustainable land management in this area.
Socio-economic aspects and the increasing saltwater intrusion toward the southwestern coastal districts of Bangladesh are the main driving force for the alteration of landuse landcover (LULC) pattern. The present study employed a supervised classification approach using the maximum likelihood algorithm method in the geospatial environment to quantify the spatiotemporal LULC changes in the southwestern coastal districts of Bangladesh. The study used multi-temporal Landsat satellite images and identified the influencing socio-economic factors to find the relation with LULC changes. The study has seen a significant relationship between socioeconomic factors and landuse dynamics. Nearly 1500 km2 area has been converted to shrimp farming in almost all districts previously used for rice cultivation or uncultivated. It is actually due to the profitable shrimp production and saline water ingress toward the inland area that induced people to alter the landuse pattern. From 2010 to 2019, shrimp production increased significantly in the study area. The output of the study could be beneficial to policymakers for implementing the landuse policy and sustainable landuse management focusing on the aquaculture industry in this area.
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