DOI: 10.1016/j.foreco.2015.06.024
Scopus记录号: 2-s2.0-84945438344
论文题名: Positive feedbacks between fire and non-native grass invasion in temperate deciduous forests
作者: Wagner S.A. ; Fraterrigo J.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 354 起始页码: 170
结束页码: 176
语种: 英语
英文关键词: Exotic species
; Fire behavior
; Japanese stiltgrass
; Microstegium vimineum
; Plant invasion
; Prescribed fire
; Soil moisture
Scopus关键词: Feedback
; Forestry
; Fuels
; Moisture
; Plants (botany)
; Soil moisture
; Soils
; Exotic species
; Fire behavior
; Japanese stiltgrass
; Microstegium vimineum
; Plant invasion
; Prescribed fires
; Fires
; alternative fuel
; deciduous forest
; fire behavior
; herbicide
; leaf litter
; monocotyledon
; phytomass
; prescribed burning
; soil moisture
; temperate environment
; vulnerability
; Japan
; Microstegium vimineum
英文摘要: Non-native grass invasions have the potential to change natural and prescribed fire regimes by altering fuels, which in turn may promote further invasion. We examined if invasion by Microstegium vimineum, a non-native annual grass, resulted in a positive invasion-fire feedback in eastern deciduous forests managed with prescribed fire and how this response varied across the landscape. Using paired invaded and uninvaded plots embedded in forest stands subjected to prescribed fire, we quantified differences in fire intensity and fuel loads, and fire effects on M. vimineum seedbank emergence, performance and spread. Invaded sites had less leaf litter and fine woody fuels, and increased fire intensity. Although fire reduced emergence of M. vimineum from the soil seedbank, sites subjected to prescribed fire had greater M. vimineum biomass and higher recruitment than unburned sites. Soil moisture strongly modulated M. vimineum response to fire, such that fire facilitated M. vimineum invasion more in wetter than drier sites. These findings indicate that deciduous forests are vulnerable to positive invasion-fire feedbacks, although the positive effect of fire may be less pronounced where soil moisture is limiting. The interaction between soil moisture and fire effects can inform management decisions regarding where to combine prescribed burning with intensive invasive control measures such as torching, hand pulling, and herbicide application. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65341
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL, United States
Recommended Citation:
Wagner S.A.,Fraterrigo J.M.. Positive feedbacks between fire and non-native grass invasion in temperate deciduous forests[J]. Forest Ecology and Management,2015-01-01,354