Allometric equations for accurate estimation of above-ground biomass in logged-over tropical rainforests in Sarawak, Malaysia |
| |
Authors: | Tanaka Kenzo Ryo Furutani Daisuke Hattori Joseph Jawa Kendawang Sota Tanaka Katsutoshi Sakurai Ikuo Ninomiya |
| |
Institution: | (1) Bureau of International Partnership, Forestry and Forest Products Research Institute, Tsukuba Ibaraki, 305-8687, Japan;(2) Faculty of Agriculture, Ehime University, Matsuyama Ehime, 790-8566, Japan;(3) Faculty of Agriculture, Kochi University, Nankoku Kochi, 783-8502, Japan;(4) Forest Department Sarawak, Kuching, 93660, Malaysia;(5) Graduate School of Kuroshio Science, Kochi University, Nankoku Kochi, 783-8502, Japan |
| |
Abstract: | Although allometric equations can be used to accurately estimate biomass and/or carbon stock in forest ecosystems, few have
been developed for logged-over tropical rainforests in Southeast Asia. We developed allometric relationships between tree
size variables (stem diameter at breast height (dbh) and tree height) and leaf, branch, stem and total above-ground biomass
in two logged-over tropical rainforests with different soil conditions in Sarawak, Malaysia. The study sites were originally
classified as mainly lowland dipterocarp forest and have been selectively logged in the past 20 years. In total, 30 individuals
from 27 species were harvested to measure above-ground parts. The correlation coefficients for the allometric relationships
obtained for total above-ground biomass as a function of dbh had high values (0.99), although the relationships for leaf biomass
had a relatively low coefficient (0.83). We also found relatively high coefficients for allometric relationships between tree
height and plant-part biomass, ranging from 0.82 to 0.97. Moreover, there were no differences for allometric equations of
total above-ground biomass between study sites. A comparison of equations of above-ground biomass in various previously reported
tropical rainforests and pan-tropic general equations imply that our allometric equations differ largely from the equations
for tropical primary forests, early successional secondary forest, and even for the general models. Therefore, choosing the
biomass estimation models for above-ground biomass in the logged-over forests of Southeast Asia requires careful consideration
of their suitability. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|