DOI: 10.1016/j.foreco.2016.04.004
Scopus记录号: 2-s2.0-84962175811
论文题名: Post-fire logging produces minimal persistent impacts on understory vegetation in northeastern Oregon, USA
作者: Peterson D.W. ; Dodson E.K.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 370 起始页码: 56
结束页码: 64
语种: 英语
英文关键词: Biodiversity
; Post-fire forest management
; Post-fire logging
; Salvage logging
; Species richness
; Understory vegetation
Scopus关键词: Biodiversity
; Ecology
; Ecosystems
; Forestry
; Multivariant analysis
; Reforestation
; Vegetation
; Best management practices
; Post fire regeneration
; Post-fire
; Salvage logging
; Sources of variability
; Species richness
; Understory plant communities
; Understory vegetation
; Fires
; best management practice
; biodiversity
; community response
; ecological impact
; environmental disturbance
; forest management
; grass
; plant community
; regeneration
; salvaging
; species diversity
; species richness
; understory
; vegetation cover
; wildfire
; California
; Oregon
; United States
; Bromus carinatus
英文摘要: Post-fire forest management commonly requires accepting some negative ecological impacts from management activities in order to achieve management objectives. Managers need to know, however, whether ecological impacts from post-fire management activities are transient or cause long-term ecosystem degradation. We studied the long-term response of understory vegetation to two post-fire logging treatments - commercial salvage logging with and without additional fuel reduction logging - on a long-term post-fire logging experiment in northeastern Oregon, USA. We sampled understory plant cover and species diversity on 10-11 sampling plots within each of nine experimental treatment units to see if post-fire logging treatments produced any lasting effects on understory plant cover, species diversity, community composition, or exotic species cover. Post-fire logging treatments produced no significant effects on understory vegetation cover, diversity, or community composition 15 years after treatment. We found no significant treatment effects on graminoid, forb, woody plant, or exotic plant cover and species richness, and differences among treatment means were generally small. Differences in treatment means were larger at the individual species level, but were only statistically significant for one native grass, California brome (Bromus carinatus), which responded differently to the two logging treatments. Multivariate analysis of understory plant communities across 91 sample plots found two major gradients in understory plant community composition, one correlated with regenerating forest (sapling) density and one correlated with residual overstory tree density, suggesting that initial fire severity (tree mortality) and post-fire regeneration may have greater long-term impacts on post-fire understory vegetation than post-fire logging. This study demonstrates that understory vegetation can be resilient to post-fire logging, particularly when best management practices, like logging over snow, are used to limit damage to soils and understory vegetation. Further research is needed to establish the generality of our results and to identify sources of variability in understory plant community responses to wildfire and post-fire logging. If further research confirms our findings, post-fire logging debates will be able to focus more on how to mitigate short-term disturbance impacts and manage fire-killed trees to meet wildlife habitat, fuel reduction, and economic objectives, and less on concerns over long-term ecosystem degradation. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64938
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Pacific Northwest Research Station, 1133 North Western Avenue, Wenatchee, WA, United States; Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR, United States; USDA Forest Service, Rocky Mountain Research Station, Interior West Forest Inventory and Analysis, 507 25th Street, Ogden, UT, United States
Recommended Citation:
Peterson D.W.,Dodson E.K.. Post-fire logging produces minimal persistent impacts on understory vegetation in northeastern Oregon, USA[J]. Forest Ecology and Management,2016-01-01,370