Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.06.019 |
Tree-level growth and survival following commercial thinning of four major softwood species in North America | |
Bose, Arun K.1,5; Weiskittel, Aaron1; Kuehne, Christian1; Wagner, Robert G.2; Turnblom, Eric3; Burkhart, Harold E.4 | |
2018-11-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 427页码:355-364 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland |
英文摘要 | Thinning is commonly applied to increase the tree growth in forest stands by improving the availability of water, light, and nutrients. However, thinning also can increase soil evaporation and intensify wind penetration into residual stands, potentially increasing moisture stress and wind damage. To strengthen our understanding of tree-level responses to thinning, we used long-term measurements from three controlled, replicated thinning experiments for four commercially important softwood species in North America, including the shade-intolerant loblolly pine (Pinus taeda L.), moderately shade-tolerant Douglas-fir (Pseudotsuga menziesii Mirbel), and shade-tolerant red spruce (Picea rubens Sarg.) and balsam fir (Abies balsamea L.). The objectives of this study were to assess the long-term (13-24 years) pattern of individual-tree growth and survival after a variety of commercial thinning treatments. Our results showed that on average tree volume growth was 31% higher in thinned stands relative to unthinned stands irrespective of species and tree size. However, the rate of growth decreased over time following thinning for loblolly pine and Douglas-fir, while a curvilinear relationship was observed for red spruce and balsam fir. Tree size was important only for loblolly pine where growth increased linearly with the size of residual trees. Tree survival was also higher in thinned stands than unthinned stands across all species in the long-term, but a significant initial decrease in survival was found in balsam fir and red spruce immediately after thinning due primarily to windthrow and breakage. Stand relative age and total basal area at time of thinning were negatively related with growth for all tree species, which may indicate that the trees examined in this study had reached their maximum growth potential or had a period of suppression prior to thinning. The relatively minor influence (i.e., 5% of total R-2) of thinning intensity on growth may suggest that the timing of thinning (i.e., age of trees when thinned) and stand characteristics (species, tree age, and stand basal area) were more important in promoting individual-tree growth. However, a heavier intensity of thinning increased survival of loblolly pine and Douglas-fir trees. Overall, our results indicated that thinning can increase tree growth and survival across species of varying shade tolerance. To ensure the maximum benefits of thinning, the timing and intensity of the treatment needs to be adjusted for species characteristics, stand structure, and tree age. |
英文关键词 | Individual-tree growth Tree mortality Softwood species Shade tolerance Tree spacing Mixed-effect modeling Pacific Northwest US Southeast US Northeast US |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440775600039 |
WOS关键词 | LOBLOLLY-PINE TREES ; AGE-RELATED DECLINE ; BOREAL MIXEDWOOD ; INDIVIDUAL TREE ; STAND AGE ; FORESTS ; COMPETITION ; WINDTHROW ; NEIGHBORHOOD ; SIZE |
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/23404 |
专题 | 气候变化 |
作者单位 | 1.Univ Maine, Sch Forest Resources, 5755 Nutting Hall, Orono, ME 04469 USA; 2.Purdue Univ, Dept Forestry & Nat Resources, W Lafayette, IN 47907 USA; 3.Univ Washington, Sch Environm & Forest Sci, Box 352100, Seattle, WA 98195 USA; 4.Virginia Tech, Dept Forest Resources & Environm Conservat, Blacksburg, VA 24061 USA; 5.WSL Swiss Fed Inst Forest Snow & Landscape Res, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland |
推荐引用方式 GB/T 7714 | Bose, Arun K.,Weiskittel, Aaron,Kuehne, Christian,et al. Tree-level growth and survival following commercial thinning of four major softwood species in North America[J]. FOREST ECOLOGY AND MANAGEMENT,2018,427:355-364. |
APA | Bose, Arun K.,Weiskittel, Aaron,Kuehne, Christian,Wagner, Robert G.,Turnblom, Eric,&Burkhart, Harold E..(2018).Tree-level growth and survival following commercial thinning of four major softwood species in North America.FOREST ECOLOGY AND MANAGEMENT,427,355-364. |
MLA | Bose, Arun K.,et al."Tree-level growth and survival following commercial thinning of four major softwood species in North America".FOREST ECOLOGY AND MANAGEMENT 427(2018):355-364. |
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