干旱区生态环境知识资源中心(Arid): Evolution of soil salinity and the critical ratio of drainage to irrigation (CRDI) in the Weigan Oasis in the Tarim Basin

Arid

DOI	10.1016/j.catena.2021.105210
	Evolution of soil salinity and the critical ratio of drainage to irrigation (CRDI) in the Weigan Oasis in the Tarim Basin
	Wang, Dandan; Zhao, Chengyi; Zheng, Jinqiang; Zhu, Jianting; Gui, Zhifan; Yu, Zhitong
通讯作者	Zhao, CY (corresponding author), 219 Ningliu Rd, Nanjing 210044, Jiangsu, Peoples R China. ; Yu, ZT (corresponding author), 104 Youyi Rd, Beijing 100094, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	201
英文摘要	Soil salt accumulation and salt leaching are very important issues for a long-term irrigation-dominated oasis with shallow groundwater in arid land. The critical ratio of drainage to irrigation (CRDI) was defined and determined to help the guide drainage and irrigation practices and maintain sustainable oasis agricultural development. This study aimed to identify the soil salinity evolution under long-term irrigation and to determine the threshold of irrigation to drainage with land-use change and groundwater depth by regression, water and salt balance, and geostatistical analysis. The results showed that the soil salinity in 0-20 cm soil depth has decreased greatly in the Weigan Oasis over the past 60 years, with an annual average decrease of 0.68 g.kg(-1) in the Weigan Oasis. The soil salt content generally increases from inside to outside of the region and varies from the upperstream to downstream. In the past 30 years, land-use change has caused a sharp reduction in the salinity in the region, and the process of irrigation and drainage has made a decrease in the total salt of the irrigated district of 207.38 x 10(5) t. Meanwhile, shallow groundwater depth and salinity are the main factors influencing soil salinization in this fluvial oasis. A CRDI is determined to be 8.20% in the Weigan Oasis. In conclusion, our study provides scientific support for the prevention and control of regional soil salinization, as well as a managerial basis for the rational allocation of water resources in long-term irrigation-dominated oasis.
英文关键词	Soil salinization Geostatistical analysis Groundwater depth Land-use change Critical ratio of drainage to irrigation (CRDI)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000631043700024
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国科学院新疆生态与地理研究所 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349799
作者单位	[Wang, Dandan; Gui, Zhifan] Hubei Normal Univ, Coll Urban & Environm Sci, Huangshi 435002, Hubei, Peoples R China; [Zhao, Chengyi] Nanjing Univ Informat Sci Technol, Land Sci Res Ctr, Nanjing 210044, Peoples R China; [Zheng, Jinqiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Xinjiang, Peoples R China; [Zhu, Jianting] Univ Wyoming, Dept Civil & Architectural Engn, Laramie, WY 82071 USA; [Yu, Zhitong] China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dandan,Zhao, Chengyi,Zheng, Jinqiang,et al. Evolution of soil salinity and the critical ratio of drainage to irrigation (CRDI) in the Weigan Oasis in the Tarim Basin[J]. 中国科学院新疆生态与地理研究所, 南京信息工程大学,2021,201.
APA	Wang, Dandan,Zhao, Chengyi,Zheng, Jinqiang,Zhu, Jianting,Gui, Zhifan,&Yu, Zhitong.(2021).Evolution of soil salinity and the critical ratio of drainage to irrigation (CRDI) in the Weigan Oasis in the Tarim Basin.CATENA,201.
MLA	Wang, Dandan,et al."Evolution of soil salinity and the critical ratio of drainage to irrigation (CRDI) in the Weigan Oasis in the Tarim Basin".CATENA 201(2021).