DOI: 10.1016/j.foreco.2013.05.005
Scopus记录号: 2-s2.0-84879283609
论文题名: Spatial, seasonal, and diel forest floor moisture dynamics in Jeffrey pine-white fir forests of the Lake Tahoe Basin, USA
作者: Banwell E.M. ; Morgan Varner J. ; Knapp E.E. ; Van Kirk R.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 305 起始页码: 11
结束页码: 20
语种: 英语
英文关键词: Abies concolor
; Duff
; Mixed-conifer
; Pinus jeffreyi
; Sierra Nevada
; Time lag
Scopus关键词: Abies concolor
; Duff
; Mixed-conifer
; Pinus jeffreyi
; Sierra Nevada
; Time lag
; Dynamics
; Fires
; Fuels
; Moisture
; Moisture determination
; Forestry
; coniferous forest
; evergreen forest
; fire behavior
; forest fire
; forest floor
; forest management
; moisture content
; seasonal variation
; spatial variation
; Abies Concolor
; Fires
; Forestry
; Fuels
; Moisture
; Pinus Jeffreyi
; Lake Tahoe Basin
; United States
; Abies
; Abies concolor
; Abies grandis
; Coniferophyta
; Pinus jeffreyi
英文摘要: Variation in consumption of forest floor fuels in temperate coniferous forests have been linked to variation in fire effects, including mineral soil heating, tree mortality, and erosion. Moisture content of forest floor fuels influences consumption and therefore is a primary predictor of fire behavior and effects. To better understand spatial and temporal variability in forest floor moisture, we collected fuels from each forest floor horizon, cones, and woody fuels in four long-unburned Jeffrey pine (Pinus jeffreyi) - white fir (Abies concolor) stands within the Lake Tahoe Basin, USA. To isolate the effects of spatial position within a stand, fuel moisture was measured at the base of trees, beneath the crown drip line, and beyond the crown in open gaps across a fire season. We compared spatial moisture dynamics at the m2, ha, and Basin scales and temporal dynamics at the day (one 24-h sampling period), month, and year scales (one site was measured in 2009 and 2010). Duff moisture varied spatially within stands, whereas moisture in litter, cones, and woody fuels did not. Forest floor moisture differed between years while woody fuel moisture did not. The variability in field results underscore the importance of measuring duff moisture content, as well as 10-h woody fuel moisture. A better understanding of the complexity of forest fuels will help land managers manage fire in Tahoe Basin forests and inform the understanding of fuels dynamics in other temperate coniferous forests. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66454
Appears in Collections: 影响、适应和脆弱性
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作者单位: Wildland Fire Laboratory, Department of Forestry and Wildland Resources, Humboldt State University, 1 Harpst Street, Arcata, CA 95521, United States; USDA Forest Service, Pacific Southwest Research Station, 3644 Avtech Parkway, Redding, CA 96002, United States; Department of Mathematics, Humboldt State University, 1 Harpst Street, Arcata, CA 95521, United States; Department of Forestry, Forest and Wildlife Research Center, Mississippi State University, Box 9681, Mississippi State, MS 39762, United States
Recommended Citation:
Banwell E.M.,Morgan Varner J.,Knapp E.E.,et al. Spatial, seasonal, and diel forest floor moisture dynamics in Jeffrey pine-white fir forests of the Lake Tahoe Basin, USA[J]. Forest Ecology and Management,2013-01-01,305