Salinity Impact and Land Use Change Analysis : Using Multi-Temporal Satellite Data

Salinity and relevant land use change related problem has been triggered in the south-western coastal region of Bangladesh. Salinity problem received very little attention in the past and Land uses in coastal Bangladesh have gone through major changes over the last half century. The southwestern region of Bangladesh is a food deficit area where net food production and diversity of food production have declined significantly over recent decades. Very recent two devastating cyclonic storm surges (SIDR and Aila) hit in the south-western region and it changing the level of salinity and due to its effect normal crop production became very risky. This study is investigating the salinity level condition and its impact on land use changes using multi temporal satellite data from 1975-2014 in the three (3) unions of Shyamnagar Upazila under Satkhira District. Remote Sensing and GIS techniques both used to know the salinity effects on land use changes at present context with comparison to previous land use status. Due to saline water intrusion, Shyamnagar Upazila have faced land use conversion related problem throughout the year.