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Ebuy J, Lokombe jp, Ponette Q, Sonwa D & Picard N. 2011. Allometric equation for predicting aboveground biomass of three tree species. Allometric equations, which predict the aboveground dry biomass of a tree from its diameter and/or height, are needed to estimate carbon stocks in forests. Although pantropical multispecies biomass equations have been developed for tropical rain forests, very few tree biomass measurements are available for central Africa, and none of these measurements were used to fit the pantropical equations. We measured the biomass of 12 trees belonging to three species at Yangambi in the Democratic Republic of Congo. Using these data, we developed a site-specific biomass equation and checked whether the pantropical equations were consistent with it. The pantropical equations were within the 95% confidence interval of the fitted site-specific equation, but with a bias for measurements that ranged from 26 to 32%. Although the pantropical biomass equations were consistent with the biomass measurements at Yangambi, larger data sets (including larger trees and more species) and more precise estimate of the wood specific gravity would be required to confirm the result.
Keywords: Carbon stock, central Africa, Congo Basin, destructive sampling, site-specific equation
Ebuy J, Lokombe jp, Ponette Q, Sonwa D & Picard N. 2011. Persamaan alometrik untuk meramal biojisim atas tanah bagi tiga spesies pokok. Persamaan alometrik yang meramal biojisim kering atas tanah sesuatu pokok daripada diameter dan/atau ketinggiannya diperlukan untuk menganggar stok karbon di dalam hutan. Walaupun persamaan biojisim pelbagai spesies pantropika telah dibangunkan untuk hutan hujan tropika, data biojisim pokok bagi Afrika tengah tidak banyak didapati dan data ini tidak dipadankan kepada persamaan pantropika. Kami menyukat biojisim 12 pokok daripada tiga spesies di Yagambi di Republik Demokratik Congo. Kami menggunakan data ini untuk membangun persamaan biojisim tapak spesifik dan menyiasat sama ada persamaan pantropika konsisten dengannya. Persamaan pantropika adalah dalam selang keyakinan 95% persamaan tapak spesifik tetapi lebih kepada data dalam julat antara 26% hingga 32%. Walaupun persamaan biojisim pantropika konsisten dengan biojisim yang disukat di Yagambi, set data yang lebih besar (termasuk pokok besar dan lebih spesies) dan anggaran graviti tentu yang lebih tepat bagi kayu diperlukan untuk mengesahkan keputusan ini.
(ProQuest: ... denotes formulae omitted.)
INTRODUCTION
Estimating the carbon stocked in forests is important to assess the mitigation effect...