Tropical forest wood production: a cross-continental comparison
Article first published online: 9 MAY 2014
© 2014 The Authors. Journal of Ecology © 2014 British Ecological Society
Journal of Ecology
Volume 102, Issue 4, pages 1025–1037, July 2014
How to Cite
Banin, L., Lewis, S. L., Lopez-Gonzalez, G., Baker, T. R., Quesada, C. A., Chao, K.-J., Burslem, D. F. R. P., Nilus, R., Abu Salim, K., Keeling, H. C., Tan, S., Davies, S. J., Monteagudo Mendoza, A., Vásquez, R., Lloyd, J., Neill, D. A., Pitman, N., Phillips, O. L. (2014), Tropical forest wood production: a cross-continental comparison. Journal of Ecology, 102: 1025–1037. doi: 10.1111/1365-2745.12263
- Issue published online: 23 JUN 2014
- Article first published online: 9 MAY 2014
- Accepted manuscript online: 21 APR 2014 06:11AM EST
- Manuscript Accepted: 14 APR 2014
- Manuscript Received: 14 JUL 2013
- Center for Tropical Forest Science
- Arnold Arboretum Asia Program of the Smithsonian Tropical Research Institute and Harvard University, USA
- Gordon and Betty Moore Foundation
- Henrietta Hutton
- Dudley Stamp
- Royal Society University
- European Research Council
- Royal Society Wolfson Research
- Sarawak Forestry Corporation
- plant–soil interactions;
- soil nutrients;
- tropical forest
- Tropical forest above-ground wood production (AGWP) varies substantially along environmental gradients. Some evidence suggests that AGWP may vary between regions and specifically that Asian forests have particularly high AGWP. However, comparisons across biogeographic regions using standardized methods are lacking, limiting our assessment of pan-tropical variation in AGWP and potential causes.
- We sampled AGWP in NW Amazon (17 long-term forest plots) and N Borneo (11 plots), both with abundant year-round precipitation. Within each region, forests growing on a broad range of edaphic conditions were sampled using standardized soil and forest measurement techniques.
- Plot-level AGWP was 49% greater in Borneo than in Amazonia (9.73 ± 0.56 vs. 6.53 ± 0.34 Mg dry mass ha−1 a−1, respectively; regional mean ± 1 SE). AGWP was positively associated with soil fertility (PCA axes, sum of bases and total P). After controlling for the edaphic environment, AGWP remained significantly higher in Bornean plots. Differences in AGWP were largely attributable to differing height–diameter allometry in the two regions and the abundance of large trees in Borneo. This may be explained, in part, by the greater solar radiation in Borneo compared with NW Amazonia.
- Trees belonging to the dominant SE Asian family, Dipterocarpaceae, gained woody biomass faster than otherwise equivalent, neighbouring non-dipterocarps, implying that the exceptional production of Bornean forests may be driven by floristic elements. This dominant SE Asian family may partition biomass differently or be more efficient at harvesting resources and in converting them to woody biomass.
- Synthesis. N Bornean forests have much greater AGWP rates than those in NW Amazon when soil conditions and rainfall are controlled for. Greater resource availability and the highly productive dipterocarps may, in combination, explain why Asian forests produce wood half as fast again as comparable forests in the Amazon. Our results also suggest that taxonomic groups differ in their fundamental ability to capture carbon and that different tropical regions may therefore have different carbon uptake capacities due to biogeographic history.