Estimation of CO2 Fixation Capacity and Growth Potential on Mangrove Forestin South East Asia (Similarity)

Okimoto, Yosuke and Nose, Akihiro and Suwignyo, Rujito Agus and Ulqodry, Tengku Zia and Oba, Y and Tateda, Y (2013) Estimation of CO2 Fixation Capacity and Growth Potential on Mangrove Forestin South East Asia (Similarity). Ministry of Forestry, Republic of Indonesia. (Submitted)

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Abstract

Carbon stocks of mangrove forest have estimated by using allometric equations, although UNFCCC approves the only 10 equations for AR-CDM. The allometric method is laborious and time consuming to develop, so alternative methodologies which more accurate and simple to use are required. We have challenged to develop such alternative methods on the monoculture mangrove forest. As a result of that, both analysis methods of gas exchange and growth curve were proposed (Okimoto et al., 2007, 2008). The former method estimates CO2 balance of photosynthetic absorption and respiratory emission of CO2, which are based on measurements of photosynthesis in leaf and respiration in leaf, branch and trunk. While, the latter is derived by variations of the tree biomass at some tree ages, and which estimates potential of maximum tree biomass and variations of annual biomass increment with derivative value of the growth curve. Our results of the gas exchange estimations shows that aboveground biomass increment were 66.0 and 34.3 ton ha-1 yr-1 for 7 and 10 year-old Kandelia candel forest in Nam Dinh and Thanh Hoa, Vietnam (21° and 19° N North latitude) and 76.3 ton ha-1 yr-1 for 9 year-old Rhizophora apiculata forest in Trat, Thailand (12° N), respectively. Meanwhile, the growth curve estimations in the both sites of Vietnam show that potential of the maximum growth of 265 and 305 ton ha-1 was estimated, respectively. Consequently, it is appeared that the mangrove monoculture forests in approx. 20° N (the North Vietnam) have potential to growth up to around 300 ton/ha. In addition to the results shown above, some data for 8-10 year-old R. apiculata forest in Sungai Asam, Indonesia (2° S) are under analysis. All analyzed data will be combined to figure out variations of growth potential of the mangrove monoculture forest in different latitudinal areas.

Item Type:	Other
Subjects:	#3 Repository of Lecturer Academic Credit Systems (TPAK) > Results of Ithenticate Plagiarism and Similarity Checker
Divisions:	08-Faculty of Mathematics and Natural Science > 54241-Marine Science (S1)
Depositing User:	Dr. Tengku Zia Ulqodry
Date Deposited:	12 Jun 2023 15:50
Last Modified:	12 Jun 2023 15:50
URI:	http://repository.unsri.ac.id/id/eprint/109451

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