Re-evaluation of carbon balance in tropical rain forests based on the matter production and decompositon processes of below-ground and dead-tree biomass.

我们挖掘了121个不同物种(78个)和大小(胸径达116厘米)的根系，并估计了马来西亚半岛帕索森林保护区低地原始龙脑果林的地上和地下生物量。地下生物量(BGB)为95.9 mg ha-1，地上生物量(AGB)为536 mg ha-1。生物量分配比(BGB/AGB)约为0.18。本研究建立的基于胸径的异速生长方程可用于东南亚其他类似林分的地下碳储量的估算。

We excavated 121 root systems of various species (78) and sizes (up to 116 cm in dbh), and estimated both above- and below-ground biomass in a lowland primary dipterocarp forest in the Pasoh Forest Reserve, Peninsular Malaysia. Total below-ground (BGB) and above-ground biomass (AGB) was estimated to be 95.9 and 536 Mg ha-1, respectively. The biomass-partitioning ratio (BGB/AGB) was about 0.18. The dbh-based allometric equation developed in this study, might be useful for evaluating below-ground carbon stocks in other stands of similar forest (old-growth dipterocarp) in South-East Asia.