DOI: 10.1016/j.foreco.2013.08.016
Scopus记录号: 2-s2.0-84883779248
论文题名: Effects of fire severity and burn patchiness on hillslope-scale surface runoff, erosion and hydrologic connectivity in a prescribed burn
作者: Cawson J.G. ; Sheridan G.J. ; Smith H.G. ; Lane P.N.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 219
结束页码: 233
语种: 英语
英文关键词: Connectivity
; Erosion
; Fire severity
; Patchiness
; Prescribed burn
; Runoff
Scopus关键词: Connectivity
; Fire severity
; Hydrologic connectivity
; Patchiness
; Prescribed burn
; Spatial arrangements
; Three orders of magnitude
; Victoria , Australia
; Fires
; Runoff
; Erosion
; connectivity
; erosion
; evergreen forest
; fire behavior
; hillslope
; numerical model
; prescribed burning
; runoff
; Australia
; Victoria [Australia]
英文摘要: Fire severity and burn patchiness are frequently cited as important to post-fire surface runoff and erosion, yet few studies quantify their effects. A better understanding of their role is needed to predict post-fire erosion and design prescribed burns. Therefore, this study quantified the effects of fire severity and burn patchiness on surface runoff, erosion and hydrologic connectivity using 116 unbounded runoff samplers. The samplers were installed in recently prescribed burnt dry eucalypt forest in Victoria, Australia. Sediment loads over 16-months were approximately three orders of magnitude higher on burnt compared with unburnt hillslopes while differences in runoff and erosion between the low and high severity hillslopes were relatively small. Unburnt patches were often highly effective at reducing hydrologic connectivity from upslope burnt areas, with sediment loads over 16-months reduced by 1.3%, 98.1% and 99.9% downslope of 1, 5 and 10. m wide unburnt patches respectively. Hydrologic connectivity was limited most effectively by wider unburnt patches (10. m) and during lower magnitude storms. The results suggest overall that post-fire runoff and erosion may be substantially limited by unburnt patches while fire severity is a less important factor (within the context of prescribed burning). Consequently, post-fire erosion models should consider the spatial arrangement of unburnt patches, and unburnt patches (>10. m wide) should be retained within prescribed burns to minimise erosion. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66233
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Ecosystem Science, The University of Melbourne, Parkville, VIC 3052, Australia; Cooperative Research Centre for Forestry, Private Bag 12, Hobart, TAS 7001, Australia; School of Environmental Sciences, University of Liverpool, Roxby Building L69 7ZT, United Kingdom
Recommended Citation:
Cawson J.G.,Sheridan G.J.,Smith H.G.,et al. Effects of fire severity and burn patchiness on hillslope-scale surface runoff, erosion and hydrologic connectivity in a prescribed burn[J]. Forest Ecology and Management,2013-01-01,310