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| DOI | 10.1016/j.foreco.2018.09.009 |
| Aboveground biomass equations for the predominant conifer species of the Inland Northwest USA | |
| Affleck D.L.R. | |
| 发表日期 | 2019 |
| ISSN | 0378-1127 |
| 起始页码 | 179 |
| 结束页码 | 188 |
| 卷号 | 432 |
| 英文摘要 | Assessment of aboveground biomass stocks in the coniferous forests of the inland northwest USA is important for timber, bioenergy, and carbon inventories, as well as for wildfire risk determination. In this study, individual tree biomass equation systems are developed for 7 regionally important conifer species using data from 470 felled trees sampled across 84 stands and spanning a range of diameters at breast height (1.37 m; dbh) running from 5 cm to 105 cm. The equation systems permit estimation of crown biomass components (i.e., foliage, dead branches, and live branches by size class) and stem components (abovestump stemwood and stembark), as well as compatible estimates of (sub)totals. The systems draw on commonly collected inventory variables including dbh, tree height, and live crown length. All biomass components scaled approximately linearly with dbh on the logarithmic scale, but equation systems drawing on both dbh and height provided more accurate estimates for all species; systems drawing additionally on live crown length provided more accurate estimates still for all species but one. In line with previous work, incorporation of live crown length improved live crown component equations most, but also improved stem component equations for two species. Across species and systems, stem components and subtotals were most accurately estimated (mean absolute errors ∼10%) while dead branch biomass estimation proved least tractable (mean absolute errors >50%). Overall, the reported biomass equation systems draw on the largest felled tree samples collected from the region, and provide the most comprehensive basis developed to date for regional forest biomass assessments over the inland northwest. © 2018 Elsevier B.V. |
| 英文关键词 | Forest inventory; Inland northwest; Randomized branch sampling; Tree biomass equation systems |
| 语种 | 英语 |
| scopus关键词 | Biomass; Risk assessment; Above ground biomass; Coniferous forests; Diameters at breast heights; Forest inventory; Inland northwest; Mean absolute error; Randomized branch samplings; Tree biomass; Forestry; aboveground biomass; coniferous forest; diameter; equation; forest inventory; sampling; wildfire; Biomass; Components; Equations; Forestry; Length; Risk Assessment; Systems; Tree Dimensions; United States; Coniferophyta |
| 来源期刊 | Forest Ecology and Management
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/156396 |
| 作者单位 | W.A. Franke College of Forestry & Conservation, University of Montana, Missoula, MT 59812, United States |
| 推荐引用方式 GB/T 7714 | Affleck D.L.R.. Aboveground biomass equations for the predominant conifer species of the Inland Northwest USA[J],2019,432. |
| APA | Affleck D.L.R..(2019).Aboveground biomass equations for the predominant conifer species of the Inland Northwest USA.Forest Ecology and Management,432. |
| MLA | Affleck D.L.R.."Aboveground biomass equations for the predominant conifer species of the Inland Northwest USA".Forest Ecology and Management 432(2019). |
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