干旱区生态环境知识资源中心(Arid): Variations in water use strategies of Tamarix ramosissima at coppice dunes along a precipitation gradient in desert regions of northwest China

Arid

DOI	10.3389/fpls.2024.1408943
	Variations in water use strategies of Tamarix ramosissima at coppice dunes along a precipitation gradient in desert regions of northwest China
	Xu, Yanqin; Zhao, Hui; Zhou, Binqian; Dong, Zhengwu; Li, Guangying; Li, Shengyu
通讯作者	Dong, ZW
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2024
卷号	15
英文摘要	Introduction The precipitation pattern has changed significantly in arid desert areas, yet it is not clear how the water use strategies of Tamarix ramosissima Ledeb. on coppice dunes along a natural precipitation gradient are affected. Methods In this study, the hydrogen and oxygen isotope compositions of xylem water, soil water, precipitation, and groundwater were measured by stable isotope techniques in Huocheng, Mosuowan, and Tazhong. Additionally, the water use strategies of natural precipitation gradient were investigated in conjunction with the MixSIAR model. Results The results indicated that the water sources of T. ramosissima exhibited significant variation from semi-arid to hyper-arid areas. In semi-arid areas, T. ramosissima mainly absorbed shallow, shallow-middle, and middle soil water; however, T. ramosissima shifted its primary water sources to middle and deep soil water in arid areas. In hyper-arid areas, it mainly utilized deep soil water and groundwater. In contrast, the water source contribution rate of T. ramosissima exhibited relative uniformity across each layer in an arid area. Notably, in hyper-arid areas, the proportion of groundwater by T. ramosissima was significantly high, reaching 60.2%. This is due to the relatively shallow groundwater supplementing the deep soil water content in the area. In conclusion, the proportion of shallow soil water decreased by 14.7% for T. ramosissima from semi-arid to hyper-arid areas, illustrating the occurrence of a gradual shift in potential water sources utilized by T. ramosissima from shallow to deep soil water and groundwater. Discussion Therefore, T. ramosissima on coppice dunes shows flexible water use strategies in relation to precipitation and groundwater, reflecting its strong environmental adaptability. The findings hold significant implications for the conservation of water resources and vegetation restoration in arid areas.
英文关键词	precipitation gradient Tamarix ramosissima water sources stable isotopes coppice dune
类型	Article
语种	英语
开放获取类型	gold, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:001291088900001
WOS关键词	STABLE-ISOTOPES ; SOIL-WATER ; SEASONAL-VARIATIONS ; TAKLIMAKAN DESERT ; DIFFERENT AGES ; USE PATTERNS ; PLANT ; VEGETATION ; ECOSYSTEM ; DROUGHT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403861
推荐引用方式 GB/T 7714	Xu, Yanqin,Zhao, Hui,Zhou, Binqian,et al. Variations in water use strategies of Tamarix ramosissima at coppice dunes along a precipitation gradient in desert regions of northwest China[J],2024,15.
APA	Xu, Yanqin,Zhao, Hui,Zhou, Binqian,Dong, Zhengwu,Li, Guangying,&Li, Shengyu.(2024).Variations in water use strategies of Tamarix ramosissima at coppice dunes along a precipitation gradient in desert regions of northwest China.FRONTIERS IN PLANT SCIENCE,15.
MLA	Xu, Yanqin,et al."Variations in water use strategies of Tamarix ramosissima at coppice dunes along a precipitation gradient in desert regions of northwest China".FRONTIERS IN PLANT SCIENCE 15(2024).