DOI: 10.1016/j.foreco.2013.02.033
Scopus记录号: 2-s2.0-84876860432
论文题名: Analysis of tree sway and crown collisions for managed Pinus resinosa in southern Maine
作者: Webb V.A. ; Rudnicki M. ; Muppa S.K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 302 起始页码: 193
结束页码: 199
语种: 英语
英文关键词: Canopy
; Crown collisions
; Oscillation frequency
; Scaling analysis
Scopus关键词: Canopy
; Crown collisions
; Elastic collision
; Experimental analysis
; Oscillation frequency
; Red pine plantations
; Scaling analysis
; Scaling relationships
; Wind effects
; Forestry
; canopy
; collision
; coniferous tree
; numerical model
; oscillation
; stand structure
; theoretical study
; tree planting
; wind velocity
; Forest Canopy
; Forestry
; Oscillation
; Wind
; Maine
; United States
; Pinus resinosa
英文摘要: In this experimental analysis, we attempt to determine if and how the oscillation frequencies of trees in a real forest stand vary. We examined the oscillation dynamics of trees in a red pine plantation before and after the stand was thinned from an initial density of approximately 1400. trees/ha to a final density of approximately 200. trees/ha. The prescribed thin effectively prevented collisions from occurring in the post-thin canopy under low and moderate wind conditions. A comparison of the pre-thin and post-thin canopies suggests that crown collisions increased the oscillation frequencies of individual trees in the stand by an average of 12.0%. We used several scaling relationships to estimate that collisions reduced tree sway amplitudes by an average of 32%. These findings are consistent with theoretical predictions from an elastic collision model of crown interactions which predicts that oscillation frequencies should increase as the wind speed increases. However, we did not find conclusive evidence of this latter behavior in the real stand, perhaps because of the limited range of wind speeds occurring during our trial. © 2013 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66543
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Natural Resources and the Environment, University of Connecticut, 1376 Storrs Rd., Storrs, CT 06235, United States
Recommended Citation:
Webb V.A.,Rudnicki M.,Muppa S.K.. Analysis of tree sway and crown collisions for managed Pinus resinosa in southern Maine[J]. Forest Ecology and Management,2013-01-01,302