Biomass Distribution Characteristics and Species-Specific Allometric Equations for Afforestation Species in Northeast China

被引：1
|
作者：
Zhou H. [1 ]
Yeerjiang B. [2 ]
He H. [3 ]
Zhang C. [1 ]
Zhao X. [1 ]
Hao M. [1 ]
机构：
[1] Research Center of Forest Management Engineering of National Forestry and Grassland Administration Beijing Forestry University, Beijing
[2] College of Forestry and Landscape Architecture, Xinjiang Agricultural University, Urumqi
[3] Jilin Provincial Academy of Forestry Sciences, Changchun
来源：
Linye Kexue/Scientia Silvae Sinicae | 2023年 / 59卷 / 11期
关键词：
all tree biomass model; allometric growth equation; biomass; single tree biomass model;
D O I：
10.11707/j.1001-7488.LYKX20220428
中图分类号：
学科分类号：
摘要：
【Objective】The biomass distribution characteristics and the species-specific allometric equations of the major afforestation tree species in Northeast China were analyzed in this study, to provide model reference for the biomass estimation of forests in this area. 【Method】This study was based on the biodiversity and ecosystem function experiment plantation in Shulan, Jilin Province. The well-growing trees in the forest plot were selected for whole-plant sampling from July to August 2021, and 15 to 21 individuals of each tree species were selected. The biomass of each tree’s roots, stems, and leaves were measured, respectively. Meanwhile, the aboveground (i.e., leaves + stems) biomass and the total (i.e., leaves + stems + roots) biomass were measured. The species-specific and all-tree species allometric models were established based on the dependent (i.e., tree height and base diameter) and independent variables (i.e., different organs, aboveground, and total biomass) using univariate linear, multivariate linear, and power functions. Coefficient of determination, parametric significance, and the Akaike Information Criterion (AIC) were employed to evaluate the models. 【Result】1) The biomass distribution of the 10 tree species exhibited generally the highest proportion in stems (45%) followed by roots (35.5%), and the lowest proportion in leaves (19.5%). With the increase in base diameter, the proportion of stem biomass showed an upward trend, the proportion of leaf biomass showed a downward trend, while the proportion of root biomass did not change significantly. 2) The biomass equations in the form of power functions were demonstrated to be the best-fit equations. Specifically, the form of Y=a(D2H)b and Y=aDb were selected as the optimal model for single-tree species, while the form of Y=a(D2H)b and Y=aDbHc were selected as the optimal model all-tree species biomass models. 【 Conclusion】 The models in the form of a power function were identified as the optimal models, equations based on single tree species have high accuracy for species-specific biomass estimation, while the equation of whole tree species have wider applicability for regional biomass estimation. © 2023 Chinese Society of Forestry. All rights reserved.
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页码：23 / 32
页数：9
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