Estimation of root biomass based on excavation of individual root systems in a primary dipterocarp forest in Pasoh Forest Reserve, Peninsular Malaysia
Estimation of root biomass based on excavation of individual root systems in a primary dipterocarp forest in Pasoh Forest Reserve, Peninsular Malaysia
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DOI：
10.1017/s0266467410000040
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发表时间：
2010-05-01
影响因子：
1.4
通讯作者：
Noor, Nur Supardi
中科院分区：
文献类型：
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作者：
Niiyama, Kaoru;Kajimoto, Takuya;Noor, Nur Supardi
根生物量的精确估算对于了解热带雨林的碳储量和动态具有重要意义。然而，有限的信息是对个人的根质量，特别是大树。我们挖掘了121个不同种类的根系（78）和大小（高达116厘米的胸径）。和估计的地上和地下生物量在一个低地初级龙脑香林在Pasoh森林保护区，马来西亚半岛。树木普查进行了四个研究地块（每0.2公顷），并估计了林分生物量。我们研究了树木尺寸参数和粗根（根直径>= 5 mm）质量之间的关系，并推导出基于胸径的异速生长方程。在挖掘过程中丢失的粗根的量进行了校正。粗根生物量校正之前和之后的损失的根估计为63.8和82.7毫克公顷（-1），这表明，大量的根（23%）在采样过程中丢失。并估算了小根生物量（
Precise estimation of root biomass is important for understanding carbon stocks and dynamics in tropical rain forests. However, limited information is available on individual root masses, especially large trees. 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. A tree census was conducted in four research plots (each 0.2 ha) and stand-level biomass was estimated. We examined relationships between tree size parameters and masses of coarse roots (roots >= 5 mm in diameter) and derived a dbh-based allometric equation. The amounts of coarse roots that were lost during excavation were corrected. Coarse-root biomass before and after correction for lost roots was estimated to be 63.8 and 82.7 Mg ha(-1), indicating that significant amounts of roots (23%) were lost during the sampling. We also estimated the biomass of small root (