Earticle

초록

영어

Salinity is one of the leading environmental hazards of Bangladesh and also for the coastal regions of the world. Therefore this study explores the spatiotemporal dynamics of land use land cover change (LULCC) analyzed by the Landsat 8 images of the year 2014 and 2024 and detects the effect of salinity on LULCC in three upazilas of Satkhira district of Bangladesh. 162 soil samples were collected from 0-20 cm depth from different land use classes using systematic random sampling technique to make composite samples. These collected soil samples were analyzed for different chemical properties and salt characteristics. The satellite imagery analysis revealed that water body and agricultural land have been declined at an alarming rate between 2014 and 2024 but shrimp cultivated area showed a substantial increase (40.01%) from the base year. From the soil sample analysis, it was found that most of the land in the study area had low organic matter with pH less than 8. The higher concentration (24.6 dS/m) of soil electrical conductivity (EC) and cation exchange capacity was also observed in these areas. Due to high soil EC value, the area under agriculture has decreased significantly and most of these areas have been converted to shrimp cultivation because of salinity. Nonetheless, this study does not assess the impacts of land use land cover change for salinity intrusion on local communities. Still, these findings will benefit the policymakers and stakeholders in taking suitable actions to reduce the impacts of soil salinity on land use change in the coastal areas at local, regional and global scales.

목차

Abstract
Introduction
Materials and Methods
Study area
Satellite data acquisition and preparation
Image pre-processing
Image classification and accuracy assessment
Soil sample collection and analysis
Results
Changes in land use pattern from 2014 to 2024
Soil salinity attributes in the study area
Correlation among the soil parameters of the study area
Salinity and land use
Discussion
Assessment of land use land cover change in the study area
Soil attributes change in the study area
Conclusion
Acknowledgements
References

키워드

저자

• Jayan Saosan Zannat [ Department of Geography and Environment, University of Dhaka, Dhaka 1000, Bangladesh ]
• Nazmun Naher [ Department of Agroforestry and Environmental Science, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh ] Corresponding Author
• Tania Sultana [ Department of Agroforestry and Environmental Science, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh ]
• Shalina Begum [ Department of Agricultural Extension, Dhaka 1215, Bangladesh ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634