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DOI | 10.1016/j.foreco.2016.12.031 |
Reserve tree mortality in two expanding-gap silvicultural systems 20 years after establishment in the Acadian forest of Maine, USA | |
Carter, David R.; Seymour, Robert S.; Fraver, Shawn; Weiskittel, Aaron | |
2017-04-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 389 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Land managers are increasingly called upon to maintain ecosystem function and restore late-successional forest structures by retaining trees ("reserves") in harvest prescriptions. Such retention practices often result in mortality of reserve trees owing to increased exposure'to wind and 'gap shock', thereby compromising management objectives. This study investigated the mortality of reserve trees (n = 787) retained over 20 years in the Acadian Forest Ecosystem Research Project (AFERP), a long-term ecological forestry experiment in central Maine, USA. Cumulative mortality across 18 species was very low (8.4% +/- 3.3%, mean +/- SD) relative to similar studies throughout the world. Annualized mortality of reserve trees of the two silvicultural systems was 1.1% for the large-gap treatment and 0.4% for the small-gap treatment. Cumulative mortality of Tsuga canadensis was lowest (2%) among species with >50 individuals, while the cumulative mortality of Thuja occidentalis was highest at 19%. Over 59% of cumulative mortality was wind-related. Annualized wind-related mortality of the reserve trees was 0.6% in the large-gap treatment and 0.2% in the small-gap treatment. More vigorous trees showed lower mortality rates. Cumulative mortality and wind-related deaths were somewhat higher in large gaps, and were influenced by spatial position within gaps. The non-traditional, expanding-gap, multi-aged silvicultural systems in this study may explain the lower incidence of windthrow and gap shock experienced by reserve trees relative to the annualized mortality rates from studies of similar, though predominantly single-cohort, silvicultural systems. (C) 2016 Elsevier B.V. All rights reserved. |
英文关键词 | Retention forestry Expanding-gap Retention tree Femelschlag Windthrow Late-successional |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398868800015 |
WOS关键词 | RETENTION FORESTRY ; BALSAM FIR ; CUT AREAS ; WINDTHROW ; STANDS ; DISTURBANCE ; SPRUCE ; ATTRIBUTES ; SCALE ; RISK |
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/22935 |
专题 | 气候变化 |
作者单位 | Univ Maine, Sch Forest Resources, 5755 Nutting Hall, Orono, ME 04469 USA |
推荐引用方式 GB/T 7714 | Carter, David R.,Seymour, Robert S.,Fraver, Shawn,et al. Reserve tree mortality in two expanding-gap silvicultural systems 20 years after establishment in the Acadian forest of Maine, USA[J]. FOREST ECOLOGY AND MANAGEMENT,2017,389. |
APA | Carter, David R.,Seymour, Robert S.,Fraver, Shawn,&Weiskittel, Aaron.(2017).Reserve tree mortality in two expanding-gap silvicultural systems 20 years after establishment in the Acadian forest of Maine, USA.FOREST ECOLOGY AND MANAGEMENT,389. |
MLA | Carter, David R.,et al."Reserve tree mortality in two expanding-gap silvicultural systems 20 years after establishment in the Acadian forest of Maine, USA".FOREST ECOLOGY AND MANAGEMENT 389(2017). |
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