Mangrove forest inventory and estimation of Carbon Storage in Poteran Island, East Java, Indonesia
Paper Details
Mangrove forest inventory and estimation of Carbon Storage in Poteran Island, East Java, Indonesia
Abstract
Mangrove forests support a wide range ecosystem services, including fisheries production and carbon storage. However, the areal extent of mangrove forests has degraded rapidly over the past five decades as a result of over harvesting, aquaculture and coastal development. Consequently, the decrease of available wood, fish, and crustacean as well as the loss of carbon (C) stored in the mangrove forests is inevitable. This study aimed to evaluate the structures of mangrove forests of Poteran Island, East Java, Indonesia as well as to quantify the above-ground and below-ground-root biomass and C stocks. Nine sampling transect quadrants with 10x10m, 5x5m, and 1x1m plots in each transect were carried out to identify, measure, and record the mangrove species and stands and their diameter breast height (DBH). Results showed that the diversity index of mangrove stands was low (H’=0.4) in which there were four mangrove species (Rhizophora stylosa, Sonneratia alba, Osbornea octodonta, Excoecaria agallocha). R. stylosa dominated the mangrove stands (97%) with IVI value of 246.01%. Although, the average DBH of this species was much lower than that of other species (4.39 ± 1.39cm), it had highest biomass and C stocks (170.38 ± 63.68Mg B ha-1 and 78.51 ± 29.32Mg C ha-1 respectively) which constituted 96.3% of total biomass and C stocks. In total, mangrove forests of Poteran Island substantially sequestered high amount of C (81.49 ± 29.94Mg C ha-1) and therefore management action should be implemented to protect its mangrove forest.
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