The impact of land used changes on mangrove forest and shoreline dynamic in Muara Gembong, Bekasi, West Java

2nd International Conference on Integrated Coastal Management and Marine Biotechnology,

Nugraha, R.B.A.^1 ; Syaharani, L.^2 ; Iska, R.^2 ; Mulyana, D.^3 ; Wahyudin, Y.^3 ; Purbani, D.^1 ; Jayawiguna, H.^1 ; Triyono, T.^1 ; Setiawan, A.^1 ; Fajar, P.^1

Marine Research Center, AMFRHM-MMAF, United States^1

Department of Geography, Faculty of Social Science, Padang State University, Indonesia^2

Center for Coastal and Marine Resources Studies, Bogor Institute of Agriculture, Indonesia^3

关键词: Accuracy assessment;    Coastal communities;    Economic activities;    Ecosystem services;    Maximum likelihood classifications;    National program;    Shoreline change;    Shoreline erosion;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/241/1/012018/pdf
DOI  :  10.1088/1755-1315/241/1/012018

来源: IOP

【 摘 要 】

Muara Gembong used to a large area of mangroves at the northern tip of Bekasi Regency, West Java. Over the last 4 decades, this area has experienced significant changes in land use and loss of environmental and ecosystem services provided by mangroves. Past economic activities have resulted in the conversion of thousands of hectares of mangrove into pond areas in pursuit of fisheries production, which at the time became a national program. This change has resulted in ecological disasters and caused economic losses to coastal communities such as shoreline changes (causing the loss of several coastal villages) and sea water intrusion (damaging pond areas and resulting crop failure). This study assessed the impact of land used changes on mangrove dynamic and shoreline erosion rate along the 5 coastal villages of Muara Gembong over 42 years. Multi-temporal Landsat data set and ground truth survey were applied. The imageries have been classified digitally using Maximum Likelihood Classification (MLC) algorithm and have been validated through the process of accuracy assessment. Digital Shoreline Analysis System (DSAS) in ArcGIS environment was used to create transects and statistical analyses for the shoreline. The results show that since 1976 the area of mangrove forests has decreased by 55% and most of it has changed to become fishponds (increased to 35%). The land conversion has resulted in shoreline changes and the biggest erosion occurred in the Pantai Bahagia village with an erosion rate of 15.46 m/year and lost an area of 330,460 Ha.