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当前位置: 首页 > 文章 > Allometric models for aboveground biomass of six common subtropical shrubs and small trees 林业研究(英文版) 2021,33 (4)
Position: Home > Articles > Allometric models for aboveground biomass of six common subtropical shrubs and small trees Journal of Forestry Research 2021,33 (4)

Allometric models for aboveground biomass of six common subtropical shrubs and small trees

作  者：
Cheng Huang;Chun Feng;Yanfei Ma;Hua Liu;Lajos Hanzo;Shushen Yang;Wenjing Wang;Songling Fu;Han Y. H. Che
单  位：
Faculty of Natural Resources Management, Lakehead University, Thunder Bay, Canad;Anhui Agricultural University;College of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, People’s Republic of China
关键词：
Aboveground biomass;Allometric models;Shrubs;Small trees;Subtropical forests;CARBON STOCKS ESTIMATION;INTERSPECIFIC VARIATION;FOREST;EQUATIONS;GROWTH;ECOSYSTEM
摘  要：
The aboveground biomass (AGB) of shrubs and small trees is the main component for the productivity and carbon storage of understory vegetation in subtropical secondary forests. However, few allometric models exist to accurately evaluate understory biomass. To estimate the AGB of five common shrub (diameter at base < 5 cm, < 5 m high) and one small tree species (< 8 m high, trees’s seedling), 206 individuals were harvested and species-specific and multi-species allometric models developed based on four predictors, height (H), stem diameter (D), crown area (Ca), and wood density (ρ). As expected, the six species possessed greater biomass in their stems compared with branches, with the lowest biomass in the leaves. Species-specific allometric models that employed stem diameter and the combined variables of D2H and ρDH as predictors accurately estimated the components and total AGB, with R2 values from 0.602 and 0.971. A multi-species shrub allometric model revealed that wood density × diameter × height (ρDH) was the best predictor, with R2 values ranging from between 0.81 and 0.89 for the components and total AGB, respectively. These results indicated that height (H) and diameter (D) were effective predictors for the models to estimate the AGB of the six species, and the introduction of wood density (ρ) improved their accuracy. The optimal models selected in this study could be applied to estimate the biomass of shrubs and small trees in subtropical regions.

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