Allometric equations for estimating the aboveground biomass of bamboos in northern Laos
Allometric equations for estimating the aboveground biomass of bamboos in northern Laos
复制标题
用于估算老挝北部竹子地上生物量的异速生长方程
DOI：
10.1080/13416979.2019.1569749
复制
发表时间：
2019
影响因子：
1.5
通讯作者：
S.Tomita and M. Nakagawa
中科院分区：
文献类型：
--
作者：
S. Xayalath;I. Hirota;S.Tomita and M. Nakagawa
竹子是老挝北部的主要植物，与当地人民的生计密切相关。我们利用该地区11种常见的竹种，建立了基于茎尺寸参数（胸高直径[DBH]和DBH2H， H为茎长）估算地上生物量的物种特异性异速生长方程。本文还对基于汇总数据的多物种异速生长方程的适用性进行了探讨。大多数种特异异速生长回归显示出显著的相关性。此外，竹竿生物量与地上生物量的多物种异速生长关系表现出特别高的相关性（r2> 0.96），表明多物种异速生长方程可用于估算未知竹种和无物种异速生长方程的竹种混交林的竹材生物量。DBH和DBH2H对地上生物量估算的适应度差异较小，表明DBH是生物量估算的实用解释变量。这些物种特异性和多物种异速生长方程将有助于开展该地区竹林碳储量和循环的未来工作。
Bamboos are dominant plants in northern Laos, where they are closely associated with local people’s livelihoods. We developed species-specific allometric equations for estimating aboveground biomass from culm size parameters (diameter at breast height [DBH] and DBH2H; H is a culm length) using 11 common bamboo species in the region. The applicability of multi-species allometric equations based on pooled data was also examined. Most species-specific allometric regressions showed significant correlations. In addition, the multi-species allometric relationships for culm biomass and aboveground biomass showed particularly high correlations (r2> 0.96), indicating the usefulness of multi-species allometric equations to estimate bamboo biomass in mixed-species bamboo forests with unknown bamboos and bamboos without species-specific allometric equations. The generally small differences in the fitness of aboveground biomass estimates between DBH and DBH2H indicate that DBH is a practical explanatory variable for biomass estimation. These species-specific and multi-species allometric equations will help in developing future work on carbon stocks and cycles in bamboo forests in this region.