DOI: 10.1016/j.foreco.2015.04.004
Scopus记录号: 2-s2.0-84929965138
论文题名: Interactions of fuel treatments, wildfire severity, and carbon dynamics in dry conifer forests
作者: Yocom Kent L.L. ; Shive K.L. ; Strom B.A. ; Sieg C.H. ; Hunter M.E. ; Stevens-Rumann C.S. ; Fulé P.Z.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 349 起始页码: 66
结束页码: 72
语种: 英语
英文关键词: Carbon dynamics
; Fire severity
; Forest management
; Fuel treatment
; Rodeo-Chediski Fire
; White Mountain Apache
Scopus关键词: Carbon
; Dynamics
; Forestry
; Fuels
; Lakes
; Carbon dynamics
; Fire severity
; Fuel treatments
; High severity fires
; Long term monitoring
; Thinning and prescribed burning
; White Mountain Apache
; Wildfire severity
; Fires
; carbon cycle
; coniferous forest
; environmental monitoring
; fire behavior
; forest management
; overstory
; prescribed burning
; stand dynamics
; thinning
; wildfire
; Arizona
; United States
; White Mountains [Arizona]
; Coniferophyta
英文摘要: Wildfires have been increasing in size and severity over recent decades. Forest managers use fuel treatments, including tree thinning and prescribed burning, to reduce the risk of high-severity fire. The impact of fuel treatments on carbon dynamics is not fully understood; previous research indicates that because carbon is removed during fuel treatments, the net effect may not be a reduction of carbon lost in the case of wildfire. The Rodeo-Chediski Fire, which burned in Arizona in 2002, was one of the largest and most severe wildfires recorded in the southwestern United States. Our objectives were to quantify carbon in three pools (live overstory trees, standing snags, and forest floor debris) across a combination of burn severities and pre-fire treatments, 2. years and 8. years after the Rodeo-Chediski Fire. Treatments included prescribed (Rx) fire, a cut and burn treatment, and no treatment. We sampled 106 plots in 36 sites in our ponderosa pine-dominated study area. We found that treatments strongly influenced fire severity; high- and moderate-severity fire was reduced from 76% in untreated areas to 57% in Rx fire treatments and 38% in cut and burn treatments. Fire severity, year, and severity X year were significant factors affecting carbon in the three different pools across the landscape. Eight years post-fire, high-severity burned areas had only 58% of the total carbon (live. +. dead) that low-severity areas had, and only 3% of the live carbon. Live carbon increased over time in low-severity sites but decreased over time in high-severity sites. We conclude that fuel treatments can significantly influence fire severity, which in turn influences carbon pools. However, treatments may or may not reduce overall carbon loss from an ecosystem in the event of a wildfire given that treatments remove carbon too. Finally, long-term monitoring is important to gain a more complete understanding of post-fire carbon dynamics. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65412
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Forestry, Northern Arizona University, P.O. Box 15018, Flagstaff, AZ, United States; Environmental Science, Policy and Management Department, UC Berkeley, 130 Mulford Hall #3114, Berkeley, CA, United States; Rocky Mountain Research Station, 2500 S. Pine Knoll Dr., Flagstaff, AZ, United States; College of Natural Resources, University of Idaho, P.O. Box 441133, Moscow, ID, United States
Recommended Citation:
Yocom Kent L.L.,Shive K.L.,Strom B.A.,et al. Interactions of fuel treatments, wildfire severity, and carbon dynamics in dry conifer forests[J]. Forest Ecology and Management,2015-01-01,349