Development of allometric relationships for accurate estimation of above- and below-ground biomass in tropical secondary forests in Sarawak, Malaysia
Development of allometric relationships for accurate estimation of above- and below-ground biomass in tropical secondary forests in Sarawak, Malaysia
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DOI：
10.1017/s0266467409006129
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发表时间：
2009-07
影响因子：
1.4
通讯作者：
T. Kenzo;T. Ichie;D. Hattori;T. Itioka;Chihiro Handa;Tadahiro Ohkubo;J. J. Kendawang-J.;Masashi Nakamura-Masas
中科院分区：
文献类型：
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作者：
T. Kenzo;T. Ichie;D. Hattori;T. Itioka;Chihiro Handa;Tadahiro Ohkubo;J. J. Kendawang-J.;Masashi Nakamura-Masas
摘要：我们在马来西亚沙捞越的各种热带次生林树木中，建立了树木大小参数（胸径（dbh）、地径（D0）和树高）与叶、茎、小根（直径<5毫米）以及总根生物量之间的异速生长关系。总共采集了23个树种的136株个体来测量地上部分。还挖掘了16个树种的77株个体的根系。所获得的树木直径与植物部分生物量之间的异速生长关系的相关系数较高，介于0.83到0.99之间。此外，除了叶片外，所有生物量部分的关系在种间差异较小。我们还发现树高与植物部分生物量之间的异速生长关系系数也相对较高，介于0.83到0.94之间。对各种热带雨林地上和地下生物量方程的比较表明，我们的异速生长方程与热带原始森林的方程有很大差异。因此，在选择东南亚热带次生林生物量估算的地上和地下异速生长方程时，需要仔细考虑其适用性。
Abstract: We developed allometric relationships between tree size parameters (stem diameter at breast height (dbh), at ground surface (D0) and tree height) and leaf, stem, small-root (diameter <5 mm) and total root biomass in various tropical secondary-forest trees in Sarawak, Malaysia. In total, 136 individuals from 23 species were harvested to measure above-ground parts. Root systems of 77 individuals of 16 species were also excavated. The coefficients of correlation for the obtained allometric relationships between tree diameter and plant-part biomass showed high values, ranging from 0.83 to 0.99. In addition, there were few interspecific differences in relationships for all biomass parts, except for leaves. We also found relatively high coefficients of allometric relationships between tree height and plant-part biomass ranging from 0.83 to 0.94. Comparison of above- and below-ground biomass equations for various tropical rainforests implies that our allometric equations differ largely from the equations for tropical primary forests. Thus, choosing both above- and below-ground allometric equations for biomass estimation in tropical secondary forests of South-East Asia requires careful consideration of their suitability.