干旱区生态环境知识资源中心(Arid): Rainwater Use Process of Caragana intermedia in Semi-Arid Zone, Tibetan Plateau

Arid

DOI	10.3389/feart.2020.00231
	Rainwater Use Process of Caragana intermedia in Semi-Arid Zone, Tibetan Plateau
	Zhu, Yajuan; Wang, Guojie
通讯作者	Zhu, YJ
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2020
卷号	8
英文摘要	Summer rain is changeable in the semi-arid climate and is the limiting factor to the survival and growth of sand-fixing vegetation, especially in the Tibetan Plateau.Caragana intermediais the dominant sand-binding shrub on a sand dune in the northeast Tibetan Plateau. Stable hydrogen and oxygen isotopes of xylem water, soil water, and groundwater were examined to study the rainwater uptake process byC. intermediain mid-summer. Soil water content was monitored continuously before and after a 13.9-mm rain. Contribution of each water source was analyzed by the MixSIAR model. The results showed that the surface soil water (0-10 cm) was replenished by rainwater through increasing soil water content and reducing its stable isotope.Caragana intermediamainly used surface soil water (0-10 cm) replenished by rainwater one day after the rain, accounting for about 60% of its total water source. As water availability decreased in upper soil layers, it used soil water at deeper levels (10-150 cm), the same water source as that one day before the rain. The rapid and efficient uptake of rainwater byC. intermediareflected its response to summer rain, which is an adaptive strategy to the semi-arid environment. Therefore,C. intermediacould survive on a sand dune by shallow soil water replenished from rainwater in the Tibetan Plateau.
英文关键词	desertification restoration delta D delta O-18 sand-fixing vegetation water source
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000561675200001
WOS关键词	WATER SOURCES ; SEASONAL-VARIATIONS ; STABLE-ISOTOPES ; SANDY LAND ; DESERT ; ECOSYSTEMS ; PRECIPITATION ; STRATEGIES ; GRASSLAND ; SHRUBS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325757
作者单位	[Zhu, Yajuan] Chinese Acad Forestry, Inst Desertificat Studies, Beijing, Peoples R China; [Wang, Guojie] Oregon State Univ, Agr Program, Eastern Oregon Univ, La Grande, OR USA
推荐引用方式 GB/T 7714	Zhu, Yajuan,Wang, Guojie. Rainwater Use Process of Caragana intermedia in Semi-Arid Zone, Tibetan Plateau[J],2020,8.
APA	Zhu, Yajuan,&Wang, Guojie.(2020).Rainwater Use Process of Caragana intermedia in Semi-Arid Zone, Tibetan Plateau.FRONTIERS IN EARTH SCIENCE,8.
MLA	Zhu, Yajuan,et al."Rainwater Use Process of Caragana intermedia in Semi-Arid Zone, Tibetan Plateau".FRONTIERS IN EARTH SCIENCE 8(2020).