气候变化领域集成服务门户(CCPortal): Using stable isotopes to investigate differences of plant water sources in subalpine habitats

CCPortal

DOI	10.1002/hyp.14518
	Using stable isotopes to investigate differences of plant water sources in subalpine habitats
	Zhang, Fuhua; Jia, Wenxiong; Zhu, Guofeng; Zhang, Zhiyuan; Shi, Yang; Yang, Le; Xiong, Hui; Zhang, Miaomiao
通讯作者	Jia, WX (通讯作者)，Northwest Normal Univ, Coll Geog & Environm Sci, 967 East Anning Rd, Lanzhou, Gansu, Peoples R China.
发表日期	2022
ISSN	0885-6087
EISSN	1099-1085
卷号	36 期号:2
英文摘要	Located along the northeastern edge of the Qinghai-Tibet Plateau in China, the Qilian Mountains are an important ecological barrier in Northwest China. Therefore, it is of great significance to study the plant water sources in subalpine habitats for understanding the ecological and hydrological processes in the Qilian Mountains. Here, based on the samples of precipitation, xylem water, soil water, river water, and spring water collected during May-October 2019 from subalpine habitats on the northern slope of the Qilian Mountains and the measured hydrogen and oxygen stable isotope values (delta H-2 and delta O-18, respectively), the present study gained further insight into plant water sources in this region using the IsoSource model. Water absorption characteristics of shrubs were similar in subalpine habitats. Specifically, plants absorbed water primarily from the topsoil layer (0-30 cm) and rarely from the deep soil layers. Nevertheless, in the dry and growing seasons with high water demand, subalpine shrubs competed for water resources at similar depths. As a result of this competition, the utilization rate of deep soil water improved in some shrubs, expanding the differences in water sources of subalpine shrubs within the same habitat. In addition, in the dry and growing seasons, the water sources of the same subalpine shrub varied across different habitats. Compared with other subalpine shrubs, Salix cupularis Rehder, Salix oritrepha Schneid., Potentilla fruticosa L., Salix sclerophylla Anderss., Rhododendron anthopogonoides Maxim., and Rhododendron przewalskii Maxim. could alter their water use strategies with variations in water conditions, exhibiting a greater drought tolerance. These findings provide valuable information for understanding the subalpine region's eco-hydrological processes and contribute to the selection of suitable species for the restoration of the subalpine ecological environment under the background of global change.
关键词	USE STRATEGIES USE PATTERNS DESERT DEPTH COMMUNITIES DROUGHT SHRUBS TREES
英文关键词	IsoSource model; plant water source; Qilian Mountains; Qinghai-Tibet Plateau; stable isotope; subalpine shrub
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000760417000021
来源期刊	HYDROLOGICAL PROCESSES
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/254119
作者单位	[Zhang, Fuhua; Jia, Wenxiong; Zhu, Guofeng; Zhang, Zhiyuan; Shi, Yang; Yang, Le; Xiong, Hui; Zhang, Miaomiao] Northwest Normal Univ, Coll Geog & Environm Sci, 967 East Anning Rd, Lanzhou, Gansu, Peoples R China; [Zhu, Guofeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fuhua,Jia, Wenxiong,Zhu, Guofeng,et al. Using stable isotopes to investigate differences of plant water sources in subalpine habitats[J]. 中国科学院西北生态环境资源研究院,2022,36(2).
APA	Zhang, Fuhua.,Jia, Wenxiong.,Zhu, Guofeng.,Zhang, Zhiyuan.,Shi, Yang.,...&Zhang, Miaomiao.(2022).Using stable isotopes to investigate differences of plant water sources in subalpine habitats.HYDROLOGICAL PROCESSES,36(2).
MLA	Zhang, Fuhua,et al."Using stable isotopes to investigate differences of plant water sources in subalpine habitats".HYDROLOGICAL PROCESSES 36.2(2022).