Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees

doi:10.1088/2515-7620/ac5f7d

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	Severe declines in hydraulic capacity and associated carbon starvation drive mortality in seawater exposed Sitka-spruce (Picea sitchensis) trees
	Wang,Wenzhi 11,12; Zhang,Peipei 10; Zhang,Hongxia 9; Grossiord,Charlotte 7,8; Pennington,Stephanie C 6; Norwood,Matthew J 5; Li,Weibin 4; Pivovaroff,Alexandria L 11; Fernández-de-U?a,Laura 3,11; Leff,Riley 11
刊名	Environmental Research Communications
	2022-03-01
卷号	4 期号:3
关键词	coastal forest tree mortality tree rings
DOI	10.1088/2515-7620/ac5f7d
通讯作者	Wang,Wenzhi()
英文摘要	Abstract 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 δ 13C, 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.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:ERC_4_3_035005
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/56486]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Wang,Wenzhi
作者单位	1.School of Biological Sciences, Washington State University, Pullman, WA 99164-4236, United States of America 2.School of Oceanography, University of Washington, Box 355351, Seattle, WA, 98195, United States of America 3.CREAF, Bellaterra, Barcelona, 08193, Spain 4.State Key Laboratory of Grassland and Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, People’s Republic of China 5.Marine and Coastal Research Laboratory, Pacific Northwest National Laboratory, 1529 W Sequim Bay Rd, Sequim, WA, 98382, United States of America 6.Joint Global Change Research Institute, Pacific Northwest National Laboratory, 5825 University Research Ct. #3500, College Park, MD 20740 United States of America 7.école Polytechnique Fédérale de Lausanne EPFL, School of Architecture, Civil and Environmental Engineering ENAC, 1015 Lausanne, Switzerland 8.Swiss Federal Institute for Forest, Snow and Landscape Research, (WSL), Birmensdorf, Switzerland 9.Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China 10.School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, People’s Republic of China
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]. Environmental Research Communications,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).