干旱区生态环境知识资源中心(Arid): Lack of acclimation of leaf area: sapwood area ratios in pinon pine and juniper in response to precipitation reduction and warming

Arid

DOI	10.1093/treephys/tpy066
	Lack of acclimation of leaf area: sapwood area ratios in pinon pine and juniper in response to precipitation reduction and warming
	McBranch, Natalie A.1; Grossiord, Charlotte 1; Adams, Henry 2; Borrego, Isaac 1; Collins, Adam D.1; Dickman, Turin 1; Ryan, Max 1; Sevanto, Sanna 1; McDowell, Nate G.3
通讯作者	McDowell, Nate G.
来源期刊	TREE PHYSIOLOGY
ISSN	0829-318X
EISSN	1758-4469
出版年	2019
卷号	39 期号:1 页码:135-142
英文摘要	The leaf area to sapwood area ratios of trees (A(l):A(S)) can shift to maintain homeostatic gas exchange per unit leaf area in response to climate variability. We tested the hypothesis that trees alter their Al: AS ratios in response to long-term warming and reduced precipitation in order to maintain leaf-specific gas exchange rates under more stressful conditions. Whole-tree A(l):A(S) was measured on mature pinon pine (Pinus edulis Engelm.) and one-seed juniper (Juniperus monosperma (Engelm.) Sarg.) trees after 5 years (2012-16) of chronic exposure to increased temperature (+4.8 degrees C), precipitation reduction (-45%), or both simultaneously. No difference was found in A(l):A(s) among treatments for either species. Associated with this lack of shift in A(l):A(s) were large changes in predawn leaf water potential and stomatal conductance, consistent with theoretical expectations of interactions between leaf and whole-tree hydraulic supply. Our results suggest that a lack of whole-tree acclimation in A(l):A(s) results in the reductions in plant gas exchange and water status associated with long-term warming and reduced precipitation in semi-arid woodlands.
英文关键词	allometry carbon allocation climate change Juniperus monosperma Pinus edulis stomatal conductance water potential
类型	Article
语种	英语
国家	USA
开放获取类型	Green Submitted, Bronze
收录类别	SCI-E
WOS记录号	WOS:000461507600013
WOS关键词	TREE MORTALITY ; PHYSIOLOGICAL-MECHANISMS ; STOMATAL CONDUCTANCE ; CLIMATE-CHANGE ; DIE-OFF ; DROUGHT ; CARBON ; TRANSPIRATION ; TEMPERATURE ; STRATEGIES
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219118
作者单位	1.Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM 87545 USA; 2.Oklahoma State Univ, Dept Plant Biol Ecol & Evolut, Stillwater, OK 74078 USA; 3.Pacific Northwest Natl Lab, Earth Syst Sci Div, Richland, WA 99354 USA
推荐引用方式 GB/T 7714	McBranch, Natalie A.,Grossiord, Charlotte,Adams, Henry,et al. Lack of acclimation of leaf area: sapwood area ratios in pinon pine and juniper in response to precipitation reduction and warming[J],2019,39(1):135-142.
APA	McBranch, Natalie A..,Grossiord, Charlotte.,Adams, Henry.,Borrego, Isaac.,Collins, Adam D..,...&McDowell, Nate G..(2019).Lack of acclimation of leaf area: sapwood area ratios in pinon pine and juniper in response to precipitation reduction and warming.TREE PHYSIOLOGY,39(1),135-142.
MLA	McBranch, Natalie A.,et al."Lack of acclimation of leaf area: sapwood area ratios in pinon pine and juniper in response to precipitation reduction and warming".TREE PHYSIOLOGY 39.1(2019):135-142.