DOI: 10.1016/j.foreco.2013.03.050
Scopus记录号: 2-s2.0-84876801693
论文题名: Conifer regeneration following stand-replacing wildfire varies along an elevation gradient in a ponderosa pine forest, Oregon, USA
作者: Dodson E.K. ; Root H.T.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 302 起始页码: 163
结束页码: 170
语种: 英语
英文关键词: Climate change-type drought
; Environmental gradient
; Natural regeneration
; Resilience
; Seedling establishment
Scopus关键词: Ecosystem recoveries
; Environmental gradient
; Logistic regression models
; Management interventions
; Natural regeneration
; Ponderosa pine forest
; Resilience
; Seedling establishment
; Climate change
; Drought
; Ecosystems
; Fires
; Logistics
; Moisture
; Regression analysis
; Reforestation
; coniferous forest
; dry forest
; ecosystem function
; ecosystem resilience
; elevation
; environmental disturbance
; environmental gradient
; forest management
; limiting factor
; moisture content
; prioritization
; regeneration
; seedling establishment
; wildfire
; Oregon
; United States
; Coniferophyta
英文摘要: Climate change is expected to increase disturbances such as stand-replacing wildfire in many ecosystems, which have the potential to drive rapid turnover in ecological communities. Ecosystem recovery, and therefore maintenance of critical structures and functions (resilience), is likely to vary across environmental gradients such as moisture availability, but has received little study. We examined conifer regeneration a decade following complete stand-replacing wildfire in dry coniferous forests spanning a 700. m elevation gradient where low elevation sites had relatively high moisture stress due to the combination of high temperature and low precipitation. Conifer regeneration varied strongly across the elevation gradient, with little tree regeneration at warm and dry low elevation sites. Logistic regression models predicted rapid increases in regeneration across the elevation gradient for both seedlings of all conifer species and ponderosa pine seedlings individually. This pattern was especially pronounced for well-established seedlings (≥38. cm in height). Graminoids dominated lower elevation sites following wildfire, which may have added to moisture stress for seedlings due to competition for water. These results suggest moisture stress can be a critical factor limiting conifer regeneration following stand-replacing wildfire in dry coniferous forests, with predicted increases in temperature and drought in the coming century likely to increase the importance of moisture stress. Strongly moisture limited forested sites may fail to regenerate for extended periods after stand-replacing disturbance, suggesting these sites are high priorities for management intervention where maintaining forests is a priority. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66550
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR 97331, United States
Recommended Citation:
Dodson E.K.,Root H.T.. Conifer regeneration following stand-replacing wildfire varies along an elevation gradient in a ponderosa pine forest, Oregon, USA[J]. Forest Ecology and Management,2013-01-01,302