Socio-Ecosystem Studies on Mangrove Forests-Charcoal Industry and Primary Productivity of Secondary Stands.

Komiyama, Akira; Kongsangchai, Jitt; Patanaponpaiboon, Pipat; Aksornkoae, Sanit; Ogino, Ken

doi:10.3759/tropics.1.233

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…The stems of Rhizophoraceae tended to show high SG compared to those of the other species, such as X. granatum (Clough & Scott 1989). Komiyama et al . (1992) estimated the SG of R. apiculata at 0.769.…”

Section: Resultsmentioning

confidence: 99%

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A common allometric equation for predicting stem weight of mangroves growing in secondary forests

Komiyama

Jintana

Sangtiean

et al. 2002

Ecological Research

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The allometric relationship for stem weight Ws is usually expressed as a function of stem diameter and height, similar to the variable d.b.h.2H, which equals the squared diameter at breast height multiplied by tree height. However, this relationship often differs between tree species, and this segregation of the relationship by species forces the researcher to do a tremendous amount of field work to determine a series of allometric equations for all tree species in the forest. In this study, we examined the segregation in the d.b.h.2H–Ws allometric relationship for five mangrove species. We examined the overall stem shape and the specific gravity of stem relating to the allometric relationships. The difference in the specific gravity was found to be the main cause of the segregation in the d.b.h.2H–Ws relationship. By taking into consideration the specific gravity of stem, we established a common equation for the five mangrove species.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, the intraspecific difference in specific gravity was small because the close relationships within each species (Clough & Scott 1989). Komiyama et al (1992) estimated the SG of R. apiculata at 0.769. Furuno (1977,1979) estimated the specific gravity of wood of Bruguiera and Sonneratia species at 0.800 and 0.450, respectively.…”

Section: Methodsmentioning

confidence: 99%

A common allometric equation for predicting stem weight of mangroves growing in secondary forests

Komiyama

Jintana

Sangtiean

et al. 2002

Ecological Research

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“…A comparison of the MF14 and PMF with the other mangrove sites found that the BGB of MF14 and PMF (74.76 and 37.61 t ha -1 , respectively) was lower than a primary mangrove forest in Halmahera, Indonesia (110.8-180.7 t ha -1 ) (Komiyama et al 1988). However, in the present study, the BGB of MF14 was similar to that reported by Komiyama et al (2000) in the Satun Province, southern Thailand who found that the belowground biomass of a secondary mangrove forest dominated by C. tagal was around 87.50 t ha -1 .…”

Section: Vegetation Biomassmentioning

confidence: 92%

Vegetation structure and carbon stock of restored mangrove on abandoned shrimp pond in the International Mangrove Botanical Garden Rama IX, Thailand

WONGPROM,

MANEEANAKEKUL,

TARA

et al. 2023

Biodiversitas

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Abstract. Wongprom J, Maneeanakekul S, Tara A, Chandaeng W, Duangnamon D, Rueangket A, Wechakit D, Wanthongchai P, Maknual C. 2023. Vegetation structure and carbon stock of restored mangrove on abandoned shrimp pond in the International Mangrove Botanical Garden Rama IX, Thailand. Biodiversitas 24: 5821-5830. The conversion of mangrove forest into shrimp aquaculture has severely impacted biodiversity and increased carbon emissions. Restoration program is thus urgently needed for such mangrove forests. In this study, we investigated the vegetation structure and composition, and biomass and carbon stock of restored mangrove on abandoned shrimp pond. Observation plots at restoration sites with age of 3-year-old (MF3) and 14-year-old (MF14) were established in the International Mangrove Botanical Garden Rama IX, Chanthaburi Province, Thailand and at abandoned shrimp pond (ASP) and protected mangrove forest (PMF) as reference sites. The diameters and heights of mangrove species were measured and identified in order to determine the vegetation structure, composition, biomass, and carbon stock. Soil samples from four soil depths, i.e. 0-15, 15-30, 30-50, and 50-100 cm, were collected to quantify the soil carbon stock. The results showed the good growth of Rhizophora stand planted at the restored sites with high vegetation biomass and carbon stock. This species also promoted species diversity, suggesting that Rhizophora spp. are suitable species for the restoration of abandoned shrimp pond. The vegetation biomass and carbon stock of MF14 (230.99 t ha-1 and 102.54 t C ha-1, respectively) was higher than that of PMF (133.84 t ha-1 and 64.94 t C ha-1, respectively). Higher vegetation and soil carbon stocks of the restored mangrove forest was positively influenced by the Rhizophora stand. However, the ecosystem carbon pool of PMF was higher (366.38 t C ha-1). This result indicates that the conservation of mangrove forest is significant to maintain the forest diversity, ecosystem function, and reducing carbon emissions, while mangrove forest restoration is essential to improve the vegetation structure and increase the soil and vegetation carbon stocks.

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“…Therefore, we used the common allometric equation by Komiyama et al (2005) to estimate aboveground biomass for all species except for Rhizophora species because the equation excludes stilt root biomass. For the Rhizophora species, we used an allometric equation by Komiyama et al (1988), which can be used to calculate each part.…”

Section: Methodsmentioning

confidence: 99%

“…However, since the R. stylosa community at PR has densely developed stilt roots (Figure 4), the allometric equation of Komiyama et al (1988) cannot be applied to estimate the stilt root biomass. Therefore, the diameter and length of all stilt roots in several 5 meters square quadrats and the wood density were measured (Nishino et al, 2015).…”

Section: Methodsmentioning

confidence: 99%

Findings from long‐term monitoring studies of Micronesian mangrove forests with special reference to carbon sequestration and sea‐level rise

Fujimoto

Ono

Tabuchi

et al. 2022

Ecological Research

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This paper summarizes the forest dynamics and carbon sequestration abilities of, as well as the influences of sea‐level rise on, Micronesian mangrove forests as revealed from long‐term studies (more than 25 years). Monitoring surveys of the permanent plots in the area's major mangrove communities revealed that the tree density decreased, while aboveground biomass increased. However, in the Rhizophora stylosa community characterized by densely developed stilt roots, the aboveground biomass temporarily decreased due to a decrease in old stilt roots, but it increased again by generating a large amount of new stilt roots. The highest aboveground biomass was estimated to be 895 Mg ha−1, which is the highest value of all the existing ground survey data from the tropics. Mangrove peat was deposited in the entire mangrove area, but its thickness differed according to the forest community, which indicated that the belowground stored carbon also differed depending on the community. In recent years, a rise in sea level exceeding 5 mm year−1 was observed in this region, and surface erosion occurred in the Bruguiera gymnorrhiza and Sonneratia alba communities. On the other hand, in the R. stylosa and Rhizophora apiculata communities, the ground level rose due to the accumulation of mangrove peat. The temporal decrease in old stilt roots and the accelerated increase in new stilt roots observed in the R. stylosa community may also be an effect of sea‐level rise. Long‐term monitoring surveys in mangrove forests are thus effective in quickly catching the effects of sea‐level rise.

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Socio-Ecosystem Studies on Mangrove Forests-Charcoal Industry and Primary Productivity of Secondary Stands.

Cited by 6 publications

References 7 publications

A common allometric equation for predicting stem weight of mangroves growing in secondary forests

A common allometric equation for predicting stem weight of mangroves growing in secondary forests

Vegetation structure and carbon stock of restored mangrove on abandoned shrimp pond in the International Mangrove Botanical Garden Rama IX, Thailand

Findings from long‐term monitoring studies of Micronesian mangrove forests with special reference to carbon sequestration and sea‐level rise

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