气候变化领域集成服务门户(CCPortal): Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees

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DOI	10.1088/2515-7620/ac5f7d
	Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees
	Wang, Wenzhi; Zhang, Peipei; Zhang, Hongxia; Grossiord, Charlotte; Pennington, Stephanie C.; Norwood, Matthew J.; Li, Weibin; Pivovaroff, Alexandria L.; Fernandez-de-Una, Laura; Leff, Riley; Yabusaki, Steven B.; Waichler, Scott; Bailey, Vanessa L.; Ward, Nicholas D.; McDowell, Nate G.
通讯作者	Wang, WZ (通讯作者)，Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China. ; Wang, WZ (通讯作者)，Pacific Northwest Natl Lab, Richland, WA 99352 USA.
发表日期	2022
ISSN	2515-7620
卷号	4 期号:3
英文摘要	Sea-level rise is causing widespread tree mortality of coastal forests, with large consequences on the Earth system as a result of these forests' importance in carbon and nutrient export. The mechanisms of mortality under these conditions are, however, poorly tested. We used wood anatomy traits, wood delta C-13, and tree radial growth to retrospectively assess the physiological process of seawater effects on whole tree xylem hydraulic capacity, gas exchange, and radial growth. During the latter stages of mortality (2018-2019), we directly measured metrics of water use and carbon metabolism across trees having crowns ranging from fully foliated to completely defoliated to investigate mortality processes at the sub-annual scale. Upon seawater exposure, soil salinity increased and allocation to hydraulic function declined, resulting in a dramatic reduction in water supply to the crown, increased crown-level water stress, and subsequent crown foliage loss. Simultaneously, leaf-level photosynthetic capacity declined steeply with increasing salinity. The combined loss of crown foliage area and photosynthetic rates per unit leaf area promoted carbon starvation, while no evidence of hydraulic failure was observed. These results elucidate mechanisms of coastal forest death under seawater exposure, enabling more accurate modeling in the future.
关键词	DROUGHT-INDUCED TREE PINYON-JUNIPER WOODLAND PHYSIOLOGICAL-MECHANISMS VULNERABILITY SALINITY GROWTH EMBOLISM XYLEM TRANSPIRATION PRECIPITATION
英文关键词	coastal forest; tree mortality; tree rings
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000776458200001
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255171
作者单位	[Wang, Wenzhi] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China; [Wang, Wenzhi; Pivovaroff, Alexandria L.; Fernandez-de-Una, Laura; Leff, Riley; Yabusaki, Steven B.; Waichler, Scott; Bailey, Vanessa L.; McDowell, Nate G.] Pacific Northwest Natl Lab, Richland, WA 99352 USA; [Zhang, Peipei] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200062, Peoples R China; [Zhang, Hongxia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China; [Grossiord, Charlotte] Swiss Fed Inst Forest Snow & Landscape Res, WSL, Birmensdorf, Switzerland; [Grossiord, Charlotte] Ecole Polytech Fed Lausanne EPFL, Sch Architecture Civil & Environm Engn ENAC, CH-1015 Lausanne, Switzerland; [Pennington, Stephanie C.] Pacific Northwest Natl Lab, Joint Global Change Res Inst, 5825 Univ Res Ct 3500, College Pk, MD 20740 USA; [Norwood, Matthew J.; Ward, Nicholas D.] Pacific Northwest Natl Lab, Marine...
推荐引用方式 GB/T 7714	Wang, Wenzhi,Zhang, Peipei,Zhang, Hongxia,et al. Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees[J]. 中国科学院西北生态环境资源研究院,2022,4(3).
APA	Wang, Wenzhi.,Zhang, Peipei.,Zhang, Hongxia.,Grossiord, Charlotte.,Pennington, Stephanie C..,...&McDowell, Nate G..(2022).Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees.ENVIRONMENTAL RESEARCH COMMUNICATIONS,4(3).
MLA	Wang, Wenzhi,et al."Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees".ENVIRONMENTAL RESEARCH COMMUNICATIONS 4.3(2022).