Biomass and density estimation of mangrove vegetation using Landsat ETM+: A case study on Muara Gembong protection forest, Bekasi, West Java

Abstract

Abstract. Forestian O, Prasetyo LB, Kusmana C. 2011. Biomass and density estimation of mangrove vegetation using Landsat ETM+: A case study on Muara Gembong protection forest, Bekasi, West Java. Bonorowo Wetlands 1: 80-95. The study focused on Muara Gembong Mangrove Forest, Bekasi District of West Java Province. The purposes of this study were to determine the extent, potential biomass, and density of mangrove vegetation using Landsat ETM+ data in 2001 and 2010. The data is processed by several stages include: strip-filling, importing, stacking layer, subsetting, geographic correction, radiometric correction, image classification, estimation of mangrove biosystem character, and accuracy assessment. Land cover types found in the Landsat scene of the region consist of nine class image classification categories, i.e. sea 1, sea 2, mangroves, open/built area, rice field 1, mixed farms, rice field 2, ponds, and rivers. Landsat images were classified by supervised classification techniques with the maximum likelihood method. Each class of land cover types created 10 training areas. Value of the inter-class separability (transformed divergence separability) image 2001 and 2010 more than 1,900 while the overall accuracy and Kappa accuracy respectively of 99.8% and 99.63% for an image in 2001; 99.61 % and 99.39% for the image in 2010. Based on the accuracy assessment, which is a classified image of 2010 has the highest overall classification accuracy of 83.33%, while the kappa statistic overalls worth 77.29 wide were in Karang Gading (78.99%), Tanjung Rejo (63.76%), while the lowest one was in Paluh Sibaji (20.58%) and Rugemuk (26.43%). The highest salinity was found at sub-districts of Labuhan Deli and Hamparan Perak, while middle salinity at sub-district of Percut Sei Tuan, while of sub-district of Pantai Labu the salinity was from low level to middle. Based on the analysis of the vegetation closeness and canopy width, the condition of the coastal region of Deli Serdang regency mangroves was destroyed.