Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.06.042 |
Tree size thresholds produce biased estimates of forest biomass dynamics | |
Searle, Eric B.; Chen, Han Y. H. | |
2017-09-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 400 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Studies that examine forest biomass dynamics often rely on long-term, spatially extensive, repeatedly measured permanent sample plots. Due to the intensive cost of sampling all trees within these plots, an arbitrary size threshold is typically imposed, which leads to only larger trees being sampled. However, it remains unclear whether the sampling of only large trees is representative of the entirety of stands of diverse sizes; the sampling of only large trees may produce biased estimates of biomass dynamics (growth, ingrowth, and mortality). Using a network of 141 permanent sample plots from Manitoba, Canada, with all trees of >1.3 m in height repeatedly measured, we constructed three distinct data sets, with 10 cm, 5 cm, and no diameter at breast height threshold, to illustrate that total productivity and mortality are increasingly underestimated with increasingly larger diameter at breast height thresholds. This effect is particularly significant in young stands, where productivity estimates peak at least 20 years earlier than the determined estimates under large thresholds. We highlight the need to account for smaller trees in long-term observational studies to ensure unbiased estimates of stand level aboveground biomass productivity and loss. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Boreal forest Climate change Sampling bias Size threshold Stand development |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406732100046 |
WOS关键词 | COMPETITION ; MORTALITY ; DROUGHT ; PRODUCTIVITY ; INCREASE ; DECLINE ; RATES |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24035 |
专题 | 气候变化 |
作者单位 | Lakehead Univ, Fac Nat Resources Management, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada |
推荐引用方式 GB/T 7714 | Searle, Eric B.,Chen, Han Y. H.. Tree size thresholds produce biased estimates of forest biomass dynamics[J]. FOREST ECOLOGY AND MANAGEMENT,2017,400. |
APA | Searle, Eric B.,&Chen, Han Y. H..(2017).Tree size thresholds produce biased estimates of forest biomass dynamics.FOREST ECOLOGY AND MANAGEMENT,400. |
MLA | Searle, Eric B.,et al."Tree size thresholds produce biased estimates of forest biomass dynamics".FOREST ECOLOGY AND MANAGEMENT 400(2017). |
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