Tropical forests play a critical role in mitigating climate change, and therefore, an accurate and precise estimation of trop¬ical forest carbon (C) is needed. However, there are many uncertainties associated with C stock estimation in a tropical forest, mainly due to its large variations in biomass. Hence, we quantified C stocks in an intact lowland mixed dipterocarp forest (MDF) in Brunei, and investigated variations in biomass and topography. Tree, deadwood, and soil C stocks were estimated by using the allometric equation method, the line intersect method, and the sampling method, respectively. Understory vegetation and litter were also sampled. We then analyzed spatial variations in tree and deadwood biomass in relation to topography. The total C stock was 321.4 Mg C ha-1, and living biomass, dead organic matter, and soil C stocks accounted for 67%, 11%, and 23%, respectively, of the total. The results reveal that there was a relatively high C stock, even compared to other tropical forests, and that there was no significant relationship between biomass and topography. Our results provide useful reference data and a greater understanding of biomass variations in lowland MDFs, which could be used for greenhouse gas emission-reduction projects.
Alder D, Synnott TJ. 1992. Permanent Sample Plot Techniques for Mixed Tropical Forest. Oxford Forestry Institute and University of Oxford, Oxford.
Appanah S, Turnbull JM. 1998. A Review of Dipterocarps: Taxonomy, Ecology, and Silviculture. Center for International Forestry Research, Bogor.
Ashton PS, Hall P. 1992. Comparisons of structure among mixed dipterocarp forests of north-western Borneo. J Ecol 90: 459-481.
Basuki TM, van Laake PE, Skidmore AK, Hussin YA. 2009. Allometric equations for estimating the above-ground biomass in tropical lowland Dipterocarp forests. For Ecol Manag 257: 1684-1694.
Brown S. 1997. Estimating Biomass and Biomass Change of Tropical Forests: A Primer, Vol. 134. Food and Agriculture Organization, Rome.
Brown S. 2002. Measuring carbon in forests: current status and future challenges. Environ Pollut 116: 363-372.
Brown S, Lugo AE. 1982. The storage and production of organic matter in tropical forests and their role in the global carbon cycle. Biotropica 14:161-187.
Cairns MA, Brown S, Helmer EH, Baumgardner GA. 1997. Root biomass allocation in the world’s upland forests. Oecologia 111: 1-11.
Carter MR. 1993. Soil Sampling and Methods of Analysis. Lewis Publishers, Boca Raton, FL.
Chave J, Andalo C, Brown S, Cairns MA, Chambers JQ, Eamus D, Fölster H, Fromard F, Higuchi N, Kira T, Lescure JP, Nelson BW, Ogawa H, Puig H, Riéra B, Yamakura T. 2005. Tree allometry and improved estimation of carbon stock and balance in tropical forests. Oecologia 145: 87-99.
Chave J, Condit R, Aguilar S, Hernandez A, Lao S, Perez R. 2004. Error propagation and scaling for tropical forest biomass estimates. Philos Trans R Soc Lond B Biol Sci 359: 409-420.
Chave J, Condit R, Lao S, Caspersen, JP, Foster RB, Hubbell SP. 2003. Spatial and temporal variation of biomass in a tropical forest: results from a large census plot in Panama. J Ecol 91: 240-252.
Chave J, Riéra B, Dubois MA. 2001. Estimation of biomass in a neotropical forest of French Guiana: spatial and temporal variability. J Trop Ecol 17: 79-96.
Clark DB, Clark DA. 2000. Landscape-scale variation in forest structure and biomass in a tropical rain forest. For Ecol Manag 137: 185-198.
Condit R. 1998. Tropical Forest Census Plots: Methods and Results from Barro Colorado Island, Panama and A Comparison with Other Plots. Springer, Berlin.
Cranbrook E, Edwards DS. 1994. Belalong: A Tropical Rainforest. The Royal Geographical Society / Sun Tree Publishing, Singapore.
de Castilho CV, Magnusson WE, de Araújo RNO, Luizao RCC, Luizao FJ, Lima AP, Higuchi N. 2006. Variation in aboveground tree live biomass in a central Amazonian forest: effects of soil and topography. For Ecol Manag 234: 85-96.
Delaney M, Brown S, Lugo AE, Torres-Lezama A, Quintero NB. 1998. The quantity and turnover of dead wood in permanent forest plots in six life zones of Venezuela. Biotropica 30: 2-11.
Gale N. 2000. The aftermath of tree death: coarse woody debris and the topography in four tropical rain forests. Can J For Res 30: 1489-1493.
Gibbs HK, Brown S, Niles JO, Foley JA. 2007. Monitoring and estimating tropical forest carbon stocks: making REDD a reality. Environ Res Lett 2: 045023.
Harmon ME, Sexton J. 1996. Guidelines for Measurements of Woody Detritus in Forest Ecosystems, Vol. 20. US LTER Network Office, Seattle, WA.
Houghton RA. 2005. Tropical deforestation and climate change. In: Amazon Institute for Environmental Research (IPAM), Belém, Brazil, and Environmental Defense (Moutinho P, Schwartzman, eds). Washington, DC, pp 13-21.
Jackson RB, Canadell J, Ehleringer JR, Mooney HA, Sala OE, Schulze ED. 1996. A global analysis of root distributions for terrestrial biomes. Oecologia 108: 389-411.
Katayama A, Kume T, Komatsu H, Saitoh TM, Ohashi M, Nakagawa M, Suzuki M, Otsuki K, Kumagai T. 2013. Carbon allocation in a Bornean tropical rainforest without dry seasons. J Plant Res 126: 505-515.
Kenzo T, Ichie T, Hattori D, Kendawang JJ, Sakurai K, Ninomiya I. 2010. Changes in above-and belowground biomass in early successional tropical secondary forests after shifting cultivation in Sarawak, Malaysia. For Ecol Manage 260: 875-882.
King DA. 1991. Correlations between biomass allocation, relative growth rate and light environment in tropical forest saplings. Funct Ecol 5: 485-492.
Lamb D. 1998. Large‐scale ecological restoration of degraded tropical forest lands: the potential role of timber plantations. Restor Ecol 6: 271-279.
Laumonier Y, Edin A, Kanninen M, Munandar AW. 2010. Landscape-scale variation in the structure and biomass of the hill dipterocarp forest of Sumatra: implications for carbon stock assessments. For Ecol Manage 259: 505-513.
Laurance WF, Fearnside PM, Laurance SG, Delamonica P, Lovejoy TE, Rankin-de Merona JM, Chambers JQ, Gascon C. 1999. Relationship between soils and Amazon forest biomass: a landscape-scale study. For Ecol Manage 118: 127-138.
Malhi Y, Aragao LEOC, Metcalfe DB, Paiva R, Quesada CA, Almeida S, Anderson L, Brando P, Chambers JQ, Da Costa ACL, Hutyra LR, Oliveira P, Patino S, Pyle EH, Robertson AL, Teixeira LM. 2009. Comprehensive assessment of carbon productivity, allocation and storage in three Amazonian forests. Glob Change Biol 15: 1255-1274.
Marshall PL, Davis G, LeMay VM. 2000. Using line intersect sampling for coarse woody debris. Forest Research Technical Report TR-003, Vancouver Forest Region, British Columbia Ministry of Forests, Nanaimo.
Moran JA, Barker MG, Moran AJ, Becker P, Ross SM. 2000. A comparison of the soil water, nutrient status, and litterfall characteristics of tropical health and mixed‐dipterocarp forest sites in Brunei. Biotropica 32: 2-13.
Ngo KM, Turner BL, Muller-Landau HC, Davies SJ, Larjavaara M, Nik Hassan NFB, Lum S. 2013. Carbon stocks in primary and secondary tropical forests in Singapore. For Ecol Manag 296: 81-89.
Niiyama K, Kajimoto T, Matsuura Y, Yamashita T, Matsuo N, Yashiro Y, Ripin A, Kassim AR, Noor NS. 2010. Estimation of root biomass based on excavation of individual root systems in a primary dipterocarp forest in Pasoh Forest Reserve, Peninsular Malaysia. J Trop Ecol 26: 271-284.
Osunkoya OO, Sheng TK, Mahmud NA, Damit N. 2007. Variation in wood density, wood water content, stem growth and mortality among twenty‐seven tree species in a tropical rainforest on Borneo Island. Austral Ecol 32: 191-201.
Pan Y, Birdsey RA, Fang J, Houghton R, Kauppi PE, Kurz WA, Phillips OL, Shvidenko A, Lewis SL, Canadell JG, Ciais P, Jackson RB, Pacala SW, McDuire AD, Piao S, Rautiainen A, sitch S, Hayes D. 2011. A large and persistent carbon sink in the world’s forests. Science 333: 988-993.
Parrotta JA. 1995. Influence of overstory composition on understory colonization by native species in plantations on a degraded tropical site. J Veg Sci 6: 627-636.
Poore D. 1989. No Timber Without Trees: Sustainability in the Tropical Forest, Earthscan Publications, London.
Poulsen AD, Nielsen IC, Tan S, Balslev H. 1996. A quantitative inventory of trees in one hectare of mixed dipterocarp forest in Temburong, Brunei Darussalam. In: Tropical Rainforest Research-Current Issues (Edwards DS, Booth WE, Choy SC, eds). Kluwer Acadimic Publishers, Dordrecht, pp 139-150.
Putz FE, Chai P. 1987. Ecological studies of lianas in Lambir national park, Sarawak, Malaysia. J Ecol 75 : 523-531.
Ravindranath NH, Ostwald M. 2008. Carbon Inventory Methods: Handbook for Greenhouse Gas Inventory, Carbon Mitigation and Roundwood Production Projects, Vol. 29. Springer, Berlin.
Saatchi SS, Harris NL, Brown S, Lefsky M, Mitchard ETA, Salas W, Zutta BR, Buermann W, Lewis SL, Hagen S, Pertova S, White L, Silman M, Morel A. 2011. Benchmark map of forest carbon stocks in tropical regions across three continents. Proc Natl Acad Sci 108: 9899-9904.
Saner P, Loh YY, Ong RC, Hector A. 2012. Carbon stocks and fluxes in tropical lowland dipterocarp rainforests in Sabah, Malaysian Borneo. PLoS One 7: e29642. DOI 10.1371/journal.pone.0029642.
Sanford Jr RL, Cuevas E. 1996. Root growth and rhizosphere interactions in tropical forests. In: Tropical Forest Plant Ecophysiology (Mulkey SS, Chazdon RL, Smith AP, eds). Springer US, New York, NY, pp 268-300.
Sato T, Hajar ZN, Shukri WWM, Niiyama K, Otani T, Rahman KA, Ismail H. 2013. Estimation of forest carbon stocks using fixed sample plots in Peninsular Malaysia. In: Workshop on REDD+ Research Project in Peninsular Malaysia (Hamdan O, Aziz HK, Takao G, Sato T, Parid MM, eds). Forest research Institute, Kuala Lumpur, pp 71-80.
Schnitzer SA, Kuzee ME, Bongers F. 2005. Disentangling above‐ and below‐ground competition between lianas and trees in a tropical forest. J Ecol 93: 1115-1125.
Small A, Martin TG, Kitching RL, Wong KM. 2004. Contribution of tree species to the biodiversity of a 1 ha old world rainforest in Brunei, Borneo. Biodivers Conserv 13: 2067-2088.
Spain AV. 1984. Litterfall and the standing crop of litter in three tropical Australian rainforests. J Ecol 72: 947-961.
Sprugel DG. 1983. Correcting for bias in log-transformed allometric equations. Ecology 64: 209–210.
Toriyama J, Takahashi T, Nishimura S, Sato T, Monda Y, Saito H, Awaya Y, Limin SH, Susanto AR, Darma F, Krisyoyo, Kiyono Y. 2014. Estimation of fuel mass and its loss during a forest fire in peat swamp forests of Central Kalimantan, Indonesia. For Ecol Manag 314: 1-8.
Yoneda T, Tamin R, Ogino K. 1990. Dynamics of aboveground big woody organs in a foothill dipterocarp forest, West Sumatra, Indonesia. Ecol Res 5: 111-130.