DOI: 10.1016/j.foreco.2014.10.011
Scopus记录号: 2-s2.0-84910678291
论文题名: Pile burning creates a fifty-year legacy of openings in regenerating lodgepole pine forests in Colorado
作者: Rhoades C.C. ; Fornwalt P.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 336 起始页码: 203
结束页码: 209
语种: 英语
英文关键词: Fire effects
; Forest disturbance
; Forest management
; Prescribed fire
; Site preparation
; Soil disturbance
Scopus关键词: Charcoal
; Forestry
; Harvesting
; Plants (botany)
; Reforestation
; Soils
; Fire effect
; Forest disturbances
; Prescribed fires
; Site preparation
; Soil disturbances
; Piles
; biological invasion
; biomass burning
; charcoal
; clearcutting
; coniferous forest
; environmental disturbance
; forest management
; forest soil
; plant residue
; prescribed burning
; regeneration
; soil degradation
; stand dynamics
; vegetation cover
; Combustion
; Forest Management
; Forests
; Logging
; Pinus Contorta
; Soil
; Colorado
; United States
; Pinus contorta
英文摘要: Pile burning is a common means of disposing the woody residues of logging and for post-harvest site preparation operations, in spite of the practice's potential negative effects. To examine the long-term implications of this practice we established a 50-year sequence of pile burns within recovering clear cuts in lodgepole pine forests. We compared tree, shrub and herbaceous plant abundance and documented indicators of soil degradation in openings where logging residue was piled and burned as part of post-harvest site preparation and the adjacent forests regenerating after clear cutting. We found that pile burning creates persistent 10-15m diameter openings with lower tree densities (<500treesha-1; stems >2.54cm diameter at 1.4m height) compared to surrounding regenerating pine stands (2000-5000treesha-1). Low tree seedling and sapling densities (stems <2.54cm diameter at 1.4m height) in the openings (10-20% of regenerating forest), suggest they will remain poorly-stocked into the future. We observed evidence of high severity burning, including layers of soil charcoal and hardened red soil across the time series, but no sign that water infiltration, compaction or other indicators of soil degradation were consistent barriers to plant recolonization. Forb and graminoid cover, for example, was higher in the burn scar openings compared to regenerating forests. Pile burn openings are formed by the loss of pine seed during burning and short-term soil changes, but it is uncertain what factors maintain the openings during subsequent decades. As conducted for site preparation, the herbaceous plant-dominated openings are not extensive (<5% cover within clear cut units), and we found few invasive, non-native plants and no indication that soil conditions were sufficiently altered to explain 50years of poor tree regeneration. Nevertheless, persistence of the openings and recent increases in the number and size of piles from fuels and bark beetle salvage treatments has prompted resource managers to consider options for utilization and on-site retention of harvest residue. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65612
Appears in Collections: 影响、适应和脆弱性
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作者单位: US Forest Service, Rocky Mountain Research Station, United States
Recommended Citation:
Rhoades C.C.,Fornwalt P.J.. Pile burning creates a fifty-year legacy of openings in regenerating lodgepole pine forests in Colorado[J]. Forest Ecology and Management,2015-01-01,336