DOI: 10.1016/j.foreco.2017.06.037
Scopus记录号: 2-s2.0-85021660767
论文题名: Predicted long-term effects of group selection on species composition and stand structure in northern hardwood forests
作者: Halpin C.R. ; Lorimer C.G. ; Hanson J.J. ; Palik B.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 677
结束页码: 691
语种: 英语
英文关键词: CANOPY model
; Forest fragmentation
; Forest sustainability
; Gap dynamics
; Uneven-aged management
Scopus关键词: Ecosystems
; Hardwoods
; Population distribution
; Size distribution
; Sustainable development
; Canopy model
; Forest fragmentations
; Forest sustainability
; Gap dynamics
; Uneven-aged management
; Forestry
; abundance
; community composition
; deciduous forest
; forest management
; fragmentation
; gap dynamics
; habitat type
; individual-based model
; long-term change
; prediction
; shade tolerance
; size distribution
; stand structure
; sustainability
英文摘要: The group selection method can potentially increase the proportion of shade-intolerant and midtolerant tree species in forests dominated by shade-tolerant species, but previous results have been variable, and concerns have been raised about possible effects on forest fragmentation and forest structure. Limited evidence is available on these issues for forests managed beyond the first cutting cycle. We used CANOPY, an individual-tree forest dynamics model, to assess long-term effects of group selection methods on tree species composition, fragmentation of the mature forest matrix, and sustainability of size distributions in northern hardwoods. Results were also compared to reference treatments that included a no-cut control, single-tree selection, and clearcutting. Model simulations predicted that group selection would increase midtolerant tree abundance compared to single-tree selection and controls, but magnitude of response was highly variable depending on habitat type and harvest design. All conventional single-tree and group selection designs greatly increased small-scale fragmentation of the mature forest matrix. Group or small patch cutting with area control (constant percent of stand area cut in openings in each cutting cycle with no cutting between groups) produced residual stands with ‘rings’ of mature and large tree crowns in a ‘chain-link fence’ pattern. All treatments, however, resulted in sustainable populations; size distributions did not deviate substantially from a descending monotonic distribution over the 300-yr period. Results suggest possible tradeoffs between maximizing midtolerant species composition and minimizing fragmentation of the mature forest matrix, and that the potential for increasing the abundance of midtolerant species can be strongly constrained by habitat type. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64216
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI, United States; USDA Forest Service, Northern Research Station, Grand Rapids, MN, United States; Department of Computer Sciences, University of Wisconsin-Madison, Madison, WI, United States
Recommended Citation:
Halpin C.R.,Lorimer C.G.,Hanson J.J.,et al. Predicted long-term effects of group selection on species composition and stand structure in northern hardwood forests[J]. Forest Ecology and Management,2017-01-01,400