DOI: 10.1016/j.foreco.2015.10.030
Scopus记录号: 2-s2.0-84945156289
论文题名: Finding balance between fire hazard reduction and erosion control in the Lake Tahoe Basin, California-Nevada
作者: Harrison N.M. ; Stubblefield A.P. ; Varner J.M. ; Knapp E.E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 360 起始页码: 40
结束页码: 51
语种: 英语
英文关键词: Fuels management
; Mastication
; Prescribed fire
; Runoff simulation
; Snowmelt
Scopus关键词: Economic and social effects
; Erosion
; Fire hazards
; Forestry
; Fuels
; Hazards
; Infiltration
; Lakes
; Mastication
; Runoff
; Sediments
; Snow melting systems
; Erosion control
; Fuel reduction treatment
; Fuels management
; Lake Tahoe Basin
; Prescribed fires
; Runoff simulation
; Snowmelt
; Wildfire severity
; Fires
英文摘要: The 2007 Angora Fire served as a stark reminder of the need for fuel reduction treatments in the Lake Tahoe Basin, California-Nevada, USA. Concerns exist, however, that the corresponding removal of forest floor fuels could increase erosion rates, negatively affecting the clarity of Lake Tahoe. To quantify trade-offs between fuel reduction and erosion, we conducted field-based snowmelt runoff simulation experiments at 16 sites within the Lake Tahoe Basin that had received mechanical mastication or prescribed fire treatments. Erodibility was measured to determine if thresholds of litter, duff, and woody fuel cover could be established that are sufficient for trapping sediment and increasing infiltration, without contributing to fire hazard. Field snow-melt simulations revealed that as little as 25% of the ground surface covered with masticated fuels over duff was sufficient to mitigate erosion. The post-prescribed fire environment characterized by heterogeneous patches of exposed bare mineral soil interspersed with unburned patches mitigated erosion by increasing infiltration. Considerable increases in sediment yield were observed in plots with >35% of ground area burned; the highest total sediment yields (values) occurred in plots where between 66% and 100% of the soil surface burned. Our field results suggest that erosion and wildfire severity can be simultaneously mitigated through the use of masticated fuel reduction treatments or prescribed fire treatments that leave sufficient organic matter to trap sediment but have sufficiently low fuel loading and/or enough fuel discontinuity or patchiness to limit fire spread. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65176
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forestry and Wildland Resources, Humboldt State University, One Harpst St., Arcata, CA, United States; Department of Forest Resources and Environmental Conservation, Virginia Tech, Blacksburg, VA, United States; USDA Forest Service, Pacific Southwest Research Station, 3644 Avtech Parkway, Redding, CA, United States; Humboldt Redwood Company, 125 Main Street, Scotia, CA, United States
Recommended Citation:
Harrison N.M.,Stubblefield A.P.,Varner J.M.,et al. Finding balance between fire hazard reduction and erosion control in the Lake Tahoe Basin, California-Nevada[J]. Forest Ecology and Management,2016-01-01,360