气候变化领域集成服务门户(CCPortal): Fire-catalyzed vegetation shifts in ponderosa pine and Douglas-fir forests of the western United States

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DOI	10.1088/1748-9326/abb9df
	Fire-catalyzed vegetation shifts in ponderosa pine and Douglas-fir forests of the western United States
	Davis K.T.; Higuera P.E.; Dobrowski S.Z.; Parks S.A.; Abatzoglou J.T.; Rother M.T.; Veblen T.T.
发表日期	2020
ISSN	17489318
卷号	15 期号:10
英文摘要	Increased wildfire activity combined with warm and dry post-fire conditions may undermine the mechanisms maintaining forest resilience to wildfires, potentially causing ecosystem transitions, or fire-catalyzed vegetation shifts. Stand-replacing fire is especially likely to catalyze vegetation shifts expected from climate change, by killing mature trees that are less sensitive to climate than juveniles. To understand the vulnerability of forests to fire-catalyzed vegetation shifts it is critical to identify both where fires will burn with stand-replacing severity and where climate conditions limit seedling recruitment. We used an extensive dendrochronological dataset to model the influence of seasonal climate on post-fire recruitment probability for ponderosa pine and Douglas-fir. We applied this model to project annual recruitment probability in the US intermountain west under contemporary and future climate conditions, which we compared to modeled probability of stand-replacing fire. We categorized areas as 'vulnerable to fire-catalyzed vegetation shifts,' if they were likely to burn at stand-replacing severity, if a fire were to occur, and had post-fire climate conditions unsuitable for tree recruitment. Climate suitability for recruitment declined over time in all ecoregions: 21% and 15% of the range of ponderosa pine and Douglas-fir, respectively, had climate conditions unsuitable for recruitment in the 1980s, whereas these values increased to 61% (ponderosa pine) and 34% (Douglas-fir) for the future climate scenario. Less area was vulnerable to fire-catalyzed vegetation shifts, but these values also increased over time, from 6% and 4% of the range of ponderosa pine and Douglas-fir in the 1980s, to 16% (ponderosa pine) and 10% (Douglas-fir) under the future climate scenario. Southern ecoregions had considerably higher vulnerability to fire-catalyzed vegetation shifts than northern ecoregions. Overall, our results suggest that the combination of climate warming and an increase in wildfire activity may substantially impact species distributions through fire-catalyzed vegetation shifts. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Douglas-fir; fire-catalyzed; ponderosa pine; post-fire; tree regeneration; vegetation transition; wildfire
语种	英语
scopus关键词	Catalysis; Climate change; Fires; Forestry; Probability; Vegetation; Climate condition; Climate suitability; Future climate scenarios; Seedling recruitment; Species distributions; Stand-replacing fires; Tree recruitments; Western United States; Climate models; catalysis; catalyst; coniferous forest; coniferous tree; environmental impact; forest fire; growth rate; vegetation cover; United States; Pseudotsuga; Pseudotsuga menziesii
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153574
作者单位	Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Dr, Missoula, MT 59812, United States; Department of Forest Management, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Dr., Missoula, MT 59812, United States; Aldo Leopold Wilderness Research Institute, Rocky Mountain Research Station, Usda Forest Service, 790 E Beckwith Ave., Missoula, MT 59801, United States; Management of Complex Systems, College of Engineering, University of California, 5200 Lake Rd., Merced, Merced, CA 95343, United States; Department of Environmental Sciences, University of North Carolina-Wilmington, 601 South College Road, Wilmington, NC 28403, United States; Department of Geography, University of Colorado-Boulder, Campus Box 260, Boulder, CO 80309, United States
推荐引用方式 GB/T 7714	Davis K.T.,Higuera P.E.,Dobrowski S.Z.,et al. Fire-catalyzed vegetation shifts in ponderosa pine and Douglas-fir forests of the western United States[J],2020,15(10).
APA	Davis K.T..,Higuera P.E..,Dobrowski S.Z..,Parks S.A..,Abatzoglou J.T..,...&Veblen T.T..(2020).Fire-catalyzed vegetation shifts in ponderosa pine and Douglas-fir forests of the western United States.Environmental Research Letters,15(10).
MLA	Davis K.T.,et al."Fire-catalyzed vegetation shifts in ponderosa pine and Douglas-fir forests of the western United States".Environmental Research Letters 15.10(2020).