干旱区生态环境知识资源中心(Arid): Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima

Arid

DOI	10.3390/su11195461
	Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima
	Li, Duan 1,2; Si, Jianhua1,2 ; Zhang, Xiaoyou 1,2; Gao, Yayu 1,2; Luo, Huan 1,2; Qin, Jie 1,2; Gao, Guanlong 3
通讯作者	Si, Jianhua
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2019
卷号	11 期号:19
英文摘要	Water relations in plants maintain healthy tree branches and drought conditions during plant growth may affect water relations, but the mechanisms are poorly known. In our study, we determined the stomatal conductance, hydraulic conductance, water potential and ion concentration of xylem sap to increase the understanding of changes in water relations in branches of Populus euphratica (P. euphratica) and Tamarix ramosissima (T. ramosissima), which are the dominant plant species in the lower reaches of the Heihe River Basin in China. The results showed that both species responded to vapor pressure deficit (VPD) during the growing season by adjusting stomatal conductance to achieve homeostasis in leaf water potentials. The leaf-specific hydraulic conductance (LSC) of the branch was determined using water status in the branch, and the LSC of the leaf was determined using water status in the leaf. Because of homeostasis in leaf water potentials, hydraulic conductance in leaves remained stable. As a result, branch dieback, which might be induced by deficits in water supply, could rarely be seen in T. ramosissima owing to the homeostasis in branch and leaf water status. The ion sensitivity of xylem hydraulic conductance in P. euphratica induced an increase in hydraulic conductance caused by the deficits in the water supply which might lead to branch dieback. The evaluation of water relations provides a further understanding of the internal mechanisms of drought acclimation for riparian plants.
英文关键词	Populus euphratica Tamarix ramosissima water relations stomatal conductance hydraulic characteristics water status ion sensitivity
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000493525500320
WOS关键词	XYLEM HYDRAULIC CONDUCTIVITY ; ION-MEDIATED INCREASE ; GROUNDWATER DEPTH ; STOMATAL CONDUCTANCE ; SEASONAL-CHANGES ; GAS-EXCHANGE ; EMBOLISM ; DESERT ; VULNERABILITY ; IRRADIANCE
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
EI主题词	2019-10-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310177
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Shanxi Univ, Dept Environm & Resources, Taiyuan 030006, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Duan,Si, Jianhua,Zhang, Xiaoyou,et al. Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima[J],2019,11(19).
APA	Li, Duan.,Si, Jianhua.,Zhang, Xiaoyou.,Gao, Yayu.,Luo, Huan.,...&Gao, Guanlong.(2019).Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima.SUSTAINABILITY,11(19).
MLA	Li, Duan,et al."Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima".SUSTAINABILITY 11.19(2019).