干旱区生态环境知识资源中心(Arid): Quantifying Threshold Water Tables for Ecological Restoration in Arid Northwestern China

Arid

DOI	10.1111/gwat.12934
	Quantifying Threshold Water Tables for Ecological Restoration in Arid Northwestern China
	Wang, Yong 1; Chen, Minjian 2; Yan, Long 2; Yang, Guiyu 2; Ma, Jing 2; Deng, Wei 2
通讯作者	Wang, Yong
来源期刊	GROUNDWATER
ISSN	0017-467X
EISSN	1745-6584
出版年	2020
卷号	58 期号:1 页码:132-142
英文摘要	In arid northwestern China, as many inland areas around the world with arid or semi-arid climate, inland river flow recharges groundwater; vegetation pattern depends on the water table, which characterizes the landscapes of oasis, transition zone and desert, within different distances from an inland river. The water table conditions play an important role in water and land management-a high water table causes salinization within the oasis while a low water table causes desertification around the oasis. This study applies a theoretical-empirical method to calculating critical groundwater depths including the depth of critical groundwater level causing salinization (DCGS) and the depth of critical groundwater level causing desertification (DCGD); the calculations are validated with field observations in the Luocheng Irrigation District located in the middle reach of the Heihe River, an inland river of the northwestern China. Specifically, the calculated DCGS is 1.29 m for the case study area and the range of water table depth at the locations with saline soil is 0.5-1.2 m. The calculated DCGD for three vegetation communities, Nitraria tangutorum + Glycyrrhiza uralensis Fisch community, Tamarix chinensis + Phragmites australis community, and Alhagi sparsifolia + Phragmites communis, are 8.26, 11.26, and 13.26 m, respectively, basically within an observed range of 6.0-13.0 m in the study area. The critical depths can be used to design an engineering approach to control water tables and mitigate salinization and desertification problem for ecosystem restoration in the study region.
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000484552200001
WOS关键词	LOWER REACHES ; TARIM RIVER ; GROUNDWATER ; SALINIZATION ; VEGETATION ; AQUIFER
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216112
作者单位	1.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, A-1 Fuxing Rd, Beijing 100038, Peoples R China; 2.China Inst Water Resources & Hydropower Res, A-1 Fuxing Rd, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yong,Chen, Minjian,Yan, Long,et al. Quantifying Threshold Water Tables for Ecological Restoration in Arid Northwestern China[J],2020,58(1):132-142.
APA	Wang, Yong,Chen, Minjian,Yan, Long,Yang, Guiyu,Ma, Jing,&Deng, Wei.(2020).Quantifying Threshold Water Tables for Ecological Restoration in Arid Northwestern China.GROUNDWATER,58(1),132-142.
MLA	Wang, Yong,et al."Quantifying Threshold Water Tables for Ecological Restoration in Arid Northwestern China".GROUNDWATER 58.1(2020):132-142.