Litter Production and Phenological Patterns of Dipterocarpus baudii in a Plantation Forest.

多聞, 山下; 博清, 武田; Kirton, L. G.

doi:10.3759/tropics.5.57

Cited by 7 publications

(3 citation statements)

References 15 publications

(12 reference statements)

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“…The sampling complies with previously proposed standards, including a minimal sampling duration of 1 year, a total sampled surface of 40 m 2 and a trap surface of more than 0.25 m 2 [35] , [36] . Litter was collected every other week over one year (June 2006–June 2007, n = 25) and was further separated into leaves, twigs (typically <1 cm in diameter) and reproductive organs (flowers and fruits) [37] . Litterfall samples were dried in a glasshouse (7 days, 60°C) before measuring their biomass with a precision scale.…”

Section: Methodsmentioning

confidence: 99%

Carbon Stocks and Fluxes in Tropical Lowland Dipterocarp Rainforests in Sabah, Malaysian Borneo

Saner

Loh

Ong³

et al. 2012

PLoS ONE

112

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Deforestation in the tropics is an important source of carbon C release to the atmosphere. To provide a sound scientific base for efforts taken to reduce emissions from deforestation and degradation (REDD+) good estimates of C stocks and fluxes are important. We present components of the C balance for selectively logged lowland tropical dipterocarp rainforest in the Malua Forest Reserve of Sabah, Malaysian Borneo. Total organic C in this area was 167.9 Mg C ha−1±3.8 (SD), including: Total aboveground (TAGC: 55%; 91.9 Mg C ha−1±2.9 SEM) and belowground carbon in trees (TBGC: 10%; 16.5 Mg C ha−1±0.5 SEM), deadwood (8%; 13.2 Mg C ha−1±3.5 SEM) and soil organic matter (SOM: 24%; 39.6 Mg C ha−1±0.9 SEM), understory vegetation (3%; 5.1 Mg C ha−1±1.7 SEM), standing litter (<1%; 0.7 Mg C ha−1±0.1 SEM) and fine root biomass (<1%; 0.9 Mg C ha−1±0.1 SEM). Fluxes included litterfall, a proxy for leaf net primary productivity (4.9 Mg C ha−1 yr−1±0.1 SEM), and soil respiration, a measure for heterotrophic ecosystem respiration (28.6 Mg C ha−1 yr−1±1.2 SEM). The missing estimates necessary to close the C balance are wood net primary productivity and autotrophic respiration.Twenty-two years after logging TAGC stocks were 28% lower compared to unlogged forest (128 Mg C ha−1±13.4 SEM); a combined weighted average mean reduction due to selective logging of −57.8 Mg C ha−1 (with 95% CI −75.5 to −40.2). Based on the findings we conclude that selective logging decreased the dipterocarp stock by 55–66%. Silvicultural treatments may have the potential to accelerate the recovery of dipterocarp C stocks to pre-logging levels.

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Section: Methodsmentioning

confidence: 99%

Carbon Stocks and Fluxes in Tropical Lowland Dipterocarp Rainforests in Sabah, Malaysian Borneo

Saner

Loh

Ong³

et al. 2012

PLoS ONE

112

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“…leaf litter and fruits) ranges between 5 and 15 Mg ha -1 ·year -1 in tropical forests (Proctor 1984). In Malaysian lowland dipterocarp forests it amounts to 9.6-12.8 Mg ha -1 ·year -1 (Yamashita et al 1995;Yamashita & Takeda 1998). Fallen branches and dead stems can be recognized as coarse litter.…”

Section: Implications For Carbon Cyclingmentioning

confidence: 99%

Temporal and spatial variation of forest biomass in relation to stand dynamics in a mature, lowland tropical rainforest, Malaysia

Hoshizaki

Niiyama

Kimura

et al. 2004

Ecological Research

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To clarify consistency in the size of carbon pool of a lowland tropical rainforest, we calculated changes in above-ground biomass in the Pasoh Forest Reserve, Peninsular Malaysia. We estimated the total aboveground biomass of a mature stand using tree census data obtained in a 6-ha plot every 2 years from 1994 to 1998. The total above-ground biomass decreased consistently from 1994 (431 Mg ha -1 ) to 1998 (403 Mg ha -1 ) (1 Mg = 10 3 kg). These are much lower than that in 1973 for a 0.2 ha portion of the same area, suggesting that the the total above-ground biomass reduction might have been consistent in recent decades. This trend contrasted with a major trend for neotropical forests. During 1994-1998, the forest gained 23.0 and 0.88 Mg ha -1 of the total above-ground biomass by tree growth and recruitment, respectively, and lost 51.9 Mg ha -1 by mortality. Overall, the biomass decreased by 28.4 Mg ha -1 (i.e. 7.10 Mg ha -1 ·year -1 ), which is almost equivalent to losing a 76-cm-diameter living tree per hectare per year. Analysis of positive and negative components of biomass change revealed that deaths of large trees dominated the total above-ground biomass decrease. The forest biomass also varied spatially, with the total above-ground biomass density ranging 212-655 Mg ha -1 on a 0.2-ha basis ( n = 30 subplots, 1998) and 365-440 Mg ha -1 on a 1 ha basis. A large decrease of the total above-ground biomass density ( > 50 Mg per ha per 2 years) in several 0.2-ha subplots contributed to the overall decrease in the 6-ha total above-ground biomass. In the present study, we discuss the association between forest dynamics and biomass fluctuation, and the implication for carbon cycling in mature forests with emphasis on forest monitoring and assessments of soil and decomposition systems.

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“…The amount of litterfall ranged from 3.75 to 7.52 Mg ha -1 yr -1 in warm-temperate forests (Tadaki & Kagawa, 1968;Kawahara, 1971;Nishioka & Kirita, 1978), 4.24 to 12.70 Mg ha -1 yr -1 in subtropical forests (Tokuyama et al, 1996;1997;Xu et al, 1998) and 5.96 to 23.3 Mg ha -1 yr -1 in tropical forests (Kira et al, 1964;Yamada, 1976;Ogawa, 1978;Kawahara et al, 1981;Thoranisorn et al, 1991;Yamashita et al, 1995;Yamashita and Takeda, 1998). The annual litterfall of the present study ranged from 6.66 to 8.34 Mg ha -1 yr -1 , which is considerably lower than that of tropical forests, with the exception of a montane forest (Yamada, 1976), in which the amount of litterfall was 5.96 Mg ha -1 yr -1 , and it seems to be significantly higher than those in warm-temperate forests.…”

Section: Comparison Among Three Types Of Evergreen Broad-leaved Forestsmentioning

confidence: 99%

Litterfall of a subtropical evergreen broad-leaved forest in Okinawa island, Japan

Alhamd

Hagihara

2004

Tropics

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The seasonal patterns of litterfalls, such as leaves, woody organs, reproductive parts, insect bodies, and feces, were investigated monthly for three years from January 1999 to December 2001 in a subtropical evergreen broad-leaved forest in the northern part of Okinawa Island, Japan. The total annual litterfall was estimated at 6.66-8.28 Mg ha -1 yr -1 . The litterfall was mainly composed of leaves (52.4-54.8% of the total litterfall), about half of which were from Castanopsis Sieboldii. The species composition of leaf litter was almost consistently the same every month for a year. The leaf litter was separated into two groups: one group, which had a high proportion of the total leaf litter, included C. Sieboldii, Schima Wallichii, Elaeocarpus japonicus, and Cinnamomum Doederleinii; the other group included the other 44 species. The species diversity indexes of leaf litter H' and J' showed their minimum values in March, when the leaf litter reached its maximum. There was no significant difference in species rank among years in terms of the annual amount of leaf litter. The mean leaf litter per tree of a given species was significantly proportional to its corresponding basal area, regardless of species and year. The degree of overlap in the seasonal patterns of litterfall components showed that leaves, insect bodies, and reproductive parts are nearly overlapped, but woody organs and feces are more or less exclusive to the other three components. Although the seasonal patterns in leaf litter of C. Sieboldii, S. Wallichii, and E. japonicus were nearly overlapped, the seasonal pattern in leaf litter of C. Doederleinii was almost independent of those of the other three species.

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Litter Production and Phenological Patterns of Dipterocarpus baudii in a Plantation Forest.

Abstract: Seasonal and annual variations in litterfall were studied over a 25-month

Cited by 7 publications

References 15 publications

Carbon Stocks and Fluxes in Tropical Lowland Dipterocarp Rainforests in Sabah, Malaysian Borneo

Carbon Stocks and Fluxes in Tropical Lowland Dipterocarp Rainforests in Sabah, Malaysian Borneo

Temporal and spatial variation of forest biomass in relation to stand dynamics in a mature, lowland tropical rainforest, Malaysia

Litterfall of a subtropical evergreen broad-leaved forest in Okinawa island, Japan

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