期刊
JOURNAL OF TROPICAL FOREST SCIENCE
卷 32, 期 3, 页码 246-256出版社
FOREST RESEARCH INST MALAYSIA
DOI: 10.26525/jtfs2020.32.3.246
关键词
Allometry; biomass expansion factor; inventory; pan-tropical model; village forest
类别
资金
- Food and Agriculture Organization of the United Nations [GCP/BGD/058/USA, FAOBGDLOA 2017-008]
Pan-tropical biomass models were developed for natural and plantation forests, which cover a wide range of geographical areas and tree species. Tree architecture of a species significantly varies among plantations and natural forests as well as village forests or homestead areas. Tree architecture has a significant influence on biomass estimation in allometric models. Therefore, it was hypothesised that pan-tropical biomass models may not be able to address the desired accuracy in biomass estimation for village forests. The objective of this study was to derive a common allometric above-ground biomass model for a village forest in Bangladesh and to compare the efficiency of the derived model with frequently used pan-tropical models. This study adopted a semi-destructive method, where the biomass of individual sampled trees was derived from stem volume, wood density and biomass expansion factor. Eight linear models [natural logarithm (Ln) transformed] were used to derive the best-fit allometric biomass model. In comparison with the best-fit model, the frequently used pan-tropical models showed significant estimation of total above-ground biomass (TAGB). Therefore, the derived model for the village forest showed higher capacity to reduce uncertainty in biomass estimation compared to pan-tropical models. This finding may restrict the indiscriminate use of pan-tropical models without checking their accuracy towards a particular forest type and species.
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