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International Journal of Advanced Engineering, Management and Science

Characteristics and Above-Ground Biomass of Mangrove Species in Enggano Island, Bengkulu Sumatra, Indonesia

( Vol-2,Issue-7,July 2016 )

Author(s): Mohammed Sadeq Mohammed Awn, Fredinan Yulianda, Yonvitner

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Page No: 1084-1091
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characterization, ecosystem, basal area, vegetation, above ground biomass (AGB).


Estimation of biomass mangrove vegetation plays a vital role in the evaluation of nutrient turnover and potential to act as a carbon sink. Preliminary investigations show that inadequate studies have been conducted on a characterization of mangrove forest. Therefore, the aim of this study is to identify species, characterization andaboveground biomass of mangrove vegetation in the Enggano Bengkulu Island of Sumatra, Indonesia. To implement this, the quadrant transect method is applied. The data are collected at 10 m2 quadrat random sampling points along seven stations laid perpendicular to the shoreline. From the experiment, the results show that coverage density of R. apiculata, B. gymnorrhiza, Sonneratia alba, and X. granatum, 63%, 27%, 6% and 4.6% respectively. R. apiculata had the highest values of X. granatum having the lowest. From the data analysis showed linearly increased with an increase of basal area, aboveground biomass was strongly related to the basal area in mangrove forests as results of correlation r = 0,9454 in an equation of Y=1, 7025x-3,6276, with R2 = 8938. When BA increase 1 m2/ha, the biomass increased by 1.7025 ton/ha. The average values for the basal area, estimation based on biomass, B. gymnorrhiza present the highest, at 22 m2/ha, 41,30 t/ha with X. granatum 2,5 m2/ha, 3.95 t/ha lowest. From the findings, it is depicted that there is a significant indirect effect of a change of characteristic of mangrove forest due to human encroachment evidence by the reduction in X. granatum and S. alba species population, Therefore, there is the need for environmental mitigations to preserve the ecosystem.

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