DOI: 10.1016/j.foreco.2017.05.055
Scopus记录号: 2-s2.0-85020268957
论文题名: Effects of intermediate-severity disturbance on composition and structure in mixed Pinus-hardwood stands
作者: Trammell B.W. ; Hart J.L. ; Schweitzer C.J. ; Dey D.C. ; Steinberg M.K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 110
结束页码: 122
语种: 英语
英文关键词: Pinus (pine)
; Quercus (oak)
; Stand structure
; Succession
; Wind disturbance
Scopus关键词: Biodiversity
; Hardwoods
; Managers
; Reforestation
; Pinus (pine)
; Quercus
; Stand structures
; Succession
; Wind disturbance
; Forestry
; coniferous tree
; disturbance
; forest management
; herbicide
; quantitative analysis
; regeneration
; shrub
; species diversity
; stand structure
; succession
; understory
; Alabama
; Appalachian Plateau
; Cumberland Plateau
; United States
; Pinus taeda
; Pinus virginiana
; Quercus
英文摘要: Increasingly, forest managers intend to create or maintain mixed Pinus-hardwood stands. This stand assemblage may be driven by a variety of objectives but is often motivated by the desire to enhance native forest diversity and promote resilience to perturbations. Documenting the effects of natural disturbances on species composition and stand structure, and thus successional and developmental pathways, in stands with these mixtures is essential to achieve these goals. The specific objectives of this study were to quantify and compare the impacts of an intermediate-severity canopy disturbance on woody species composition, canopy structure, understory light regimes, and species diversity in mixed Pinus (Pinus taeda and Pinus virginiana)-hardwood stands on the Cumberland Plateau in Alabama. The natural intermediate-severity disturbance disproportionately removed large Pinus stems, promoted hardwood dominance, and effectively accelerated succession. The resultant stand structure did not resemble one of the widely recognized stages of stand development and was best characterized by the mixed-stage of development. The canopy disturbance did not significantly alter canopy-layer species diversity, but seedling- and sapling-layer diversity was significantly greater in disturbed neighborhoods. Results from this study may be used as guidelines by managers of mixed Pinus-hardwood systems. To maintain a Pinus component in stands that are succeeding to hardwood dominance, canopy disturbance alone is insufficient and must be planned in conjunction with competition reduction measures in the regeneration layer, such as fire or herbicide application. Conversely, if managers wish to promote a hardwood component in pure or near pure Pinus stands, creation of variably sized canopy openings throughout the stand may recruit hardwood reproduction to larger size classes, as the intermediate-severity disturbance documented here accelerated succession toward hardwood dominance. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64217
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geography, University of Alabama, Tuscaloosa, AL, United States; Southern Research Station, USDA Forest Service, Huntsville, AL, United States; Northern Research Station, USDA Forest Service, Columbia, MO, United States
Recommended Citation:
Trammell B.W.,Hart J.L.,Schweitzer C.J.,et al. Effects of intermediate-severity disturbance on composition and structure in mixed Pinus-hardwood stands[J]. Forest Ecology and Management,2017-01-01,400