Spatial Distribution of Mangrove in Kelapan Island, South Bangka Regency

摘要

Mangrove forests are an important coastal renewable resources which were found in the brackish water, estuary, lagoon, and tropical island. These forest provide important ecosystem goods, create the new island in the coastal area and biofilter's supporting as a place to live, to spawn, to feed and coastal food web. One of the area in South Bangka Regency, Bangka Belitung Province, which found high biodiversity species and density mangroves is a Kelapan Island. A little Information about mangrove spatial distribution in Kelapan Island became main problem in the management of sustainability mangrove ecosystem, therefore this study done. The purpose of this study was to analyze the condition of mangrove area, despite of it was density level and wide changing of mangrove using remote sensing approach. The mangrove condition should be analyzed to observe human activities that influence surrounded environment. Output this study is to map out spatial distribution of mangrove using Sentinel 2A imagery high spatial resolution and GIS technology with acquired in April 05th 2018. Mangroves canopy and the others was delineated by using visual interpretation, and standard true color composite band (483) and false color composite band (843) of Sentinel 2A and also using transformation NDVI formula based on histogram adjustment result. This research show that the mangrove density could be classified in to three classes: low density (18.12 ha), medium density (97.87 ha), and high density (110.61). Estimation of mangrove area based on result is 226.60 Ha. The field studies recognized that types of mangrove identified in Kelapan Island are dominated by Rhizophora sp, Sonneratia sp, Bruguierra sp.