气候变化领域集成服务门户(CCPortal): Mechanisms of a coniferous woodland persistence under drought and heat

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DOI	10.1088/1748-9326/ab0921
	Mechanisms of a coniferous woodland persistence under drought and heat
	McDowell N.G.; Grossiord C.; Adams H.D.; Pinzón-Navarro S.; Mackay D.S.; Breshears D.D.; Allen C.D.; Borrego I.; Dickman L.T.; Collins A.; Gaylord M.; McBranch N.; Pockman W.T.; Vilagrosa A.; Aukema B.; Goodsman D.; Xu C.
发表日期	2019
ISSN	17489318
卷号	14 期号:4
英文摘要	Predictions of warmer droughts causing increasing forest mortality are becoming abundant, yet few studies have investigated the mechanisms of forest persistence. To examine the resistance of forests to warmer droughts, we used a five-year precipitation reduction (∼45% removal), heat (+4 °C above ambient) and combined drought and heat experiment in an isolated stand of mature Pinus edulis-Juniperus monosperma. Despite severe experimental drought and heating, no trees died, and we observed only minor evidence of hydraulic failure or carbon starvation. Two mechanisms promoting survival were supported. First, access to bedrock water, or 'hydraulic refugia' aided trees in their resistance to the experimental conditions. Second, the isolation of this stand amongst a landscape of dead trees precluded ingress by Ips confusus, frequently the ultimate biotic mortality agent of piñon. These combined abiotic and biotic landscape-scale processes can moderate the impacts of future droughts on tree mortality by enabling tree avoidance of hydraulic failure, carbon starvation, and exposure to attacking abiotic agents. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	die-off; drought; precipitation; refugia; warming
语种	英语
scopus关键词	Carbon; Drought; Heat resistance; Precipitation (chemical); Abiotic agents; Carbon starvation; Die-off; Experimental conditions; Hydraulic failure; Landscape scale; refugia; warming; Forestry; bedrock; coniferous forest; coniferous tree; drought; environmental factor; forest ecosystem; global warming; heating; landscape; mortality; precipitation (climatology); refuge; woodland; Ips confusus; Juniperus monosperma; Pinus edulis
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/154607
作者单位	Pacific Northwest National Laboratory, Richland, WA, United States; Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, United States; Swiss Federal Research Institute WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland; Department of Plant Biology, Ecology and Evolution, Oklahoma State University, Stillwater, OK 74078, United States; Maestría en Entomología, Universidad de Panamá, Ciudad de Panamá, Panama; Department of Geography, University at Buffalo, Buffalo, NY, United States; School of Natural Resources and the Environment, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, United States; United States Geological Survey, Fort Collins Science Center, New Mexico Landscapes Field Station, Los Alamos, NM, United States; School of Forestry, Northern Arizona University, Flagstaff, AZ, United States; Forest Health Protection, US Forest Service, Flagstaff, AZ, United States; Department of Biology, University of New Mexico, Albuquerq...
推荐引用方式 GB/T 7714	McDowell N.G.,Grossiord C.,Adams H.D.,et al. Mechanisms of a coniferous woodland persistence under drought and heat[J],2019,14(4).
APA	McDowell N.G..,Grossiord C..,Adams H.D..,Pinzón-Navarro S..,Mackay D.S..,...&Xu C..(2019).Mechanisms of a coniferous woodland persistence under drought and heat.Environmental Research Letters,14(4).
MLA	McDowell N.G.,et al."Mechanisms of a coniferous woodland persistence under drought and heat".Environmental Research Letters 14.4(2019).