DOI: 10.1016/j.foreco.2017.01.002
Scopus记录号: 2-s2.0-85009110663
论文题名: Influence of reproduction cutting methods on structure, growth and regeneration of longleaf pine forests in flatwoods and uplands
作者: Brockway D.G. ; Outcalt K.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 389 起始页码: 249
结束页码: 259
语种: 英语
英文关键词: Continuous cover forestry
; Even-aged silviculture
; Pinus palustris Mill.
; Pro-B method
; Selection systems
; Shelterwood methods
; Uneven-aged silviculture
Scopus关键词: Ecology
; Ecosystems
; Landforms
; Reforestation
; Site selection
; B method
; Continuous cover forestries
; Even-aged silviculture
; Pinus palustris Mill
; Selection systems
; Shelterwood methods
; Uneven-aged silviculture
; Forestry
; basal area
; coniferous forest
; cutting (process)
; drought
; ecosystem structure
; forest ecosystem
; forest resource
; forestry practice
; growth rate
; regeneration
; regrowth
; selective logging
; silviculture
; stand dynamics
; traditional knowledge
; upland region
; wildfire
; United States
; Pinus palustris
; Serenoa repens
英文摘要: Though longleaf pine (Pinus palustris Mill.) forests have been primarily managed with even-aged methods, interest is increasing in uneven-aged systems, as a means of achieving a wider range of stewardship goals. Selection silviculture has been practiced on a limited scale in longleaf pine, but difficulty with using traditional approaches and absence of an evaluation across a range of site types has left managers in doubt concerning its suitability. This study was conducted to quantify the effects on stand dynamics of applying single-tree selection, group selection, irregular shelterwood and uniform shelterwood in longleaf pine forests on flatwoods and uplands of the southeastern United States. Selection treatments reduced stand basal area to ∼11.5 m2 ha−1 and shelterwood treatments left a basal area of ∼5.8 m2 ha−1. In spite of initial decreases in tree density and standing volume, growth rates were normal in all stands (1–5% per year), as were subsequent increases in basal area and tree density. Despite the continuing abundance of saw-palmetto (Serenoa repens W. Bartram) cover and absence of prescribed fire during the eight post-treatment years, significant increases in pine regeneration were observed in all treated stands in the flatwoods. Because of a multi-year drought in the uplands, pine seedling numbers dramatically declined, no matter which reproduction approach was employed. Although seedling numbers eventually began to recover, they were again precipitously depressed by a wildfire in 2013. Even with such losses, sufficient pine seedlings remained in each treatment to foster successful stand regeneration. Single-tree selection produced less overall change in the forest ecosystem than group selection, which caused less alteration than shelterwood treatment. Single-tree selection appears to be an effective way for achieving stand regeneration, while maintaining a continuous canopy cover that aids in the control of woody competitors and supports an array of resource values. Selection silviculture seems to be a lower risk approach for guiding forests along a trajectory of gradual improvement, with adjustments provided by frequent surface fires and periodic tree harvest. Long-term observation will be required to verify that selection can sustain forest ecosystems on sites characterized by differing environments. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64485
Appears in Collections: 影响、适应和脆弱性
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作者单位: Southern Research Station, USDA Forest Service, 521 Devall Drive, Auburn, AL, United States; Southern Research Station, USDA Forest Service, 320 Green Street, Athens, GA, United States
Recommended Citation:
Brockway D.G.,Outcalt K.W.. Influence of reproduction cutting methods on structure, growth and regeneration of longleaf pine forests in flatwoods and uplands[J]. Forest Ecology and Management,2017-01-01,389