干旱区生态环境知识资源中心(Arid): Eco-hydrological effects of agricultural water-saving in the Yinchuan Plain, Northwest China

Arid

DOI	10.1007/s10113-022-02002-1
	Eco-hydrological effects of agricultural water-saving in the Yinchuan Plain, Northwest China
	Mi, Lina; Tian, Juncang; Si, Jianning; Chen, Yuchun
通讯作者	Mi, LN
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-3798
EISSN	1436-378X
出版年	2023
卷号	23 期号:1
英文摘要	In arid and semiarid irrigation area, the systematic influence of agricultural water-saving on eco-hydrological environment remained unclear at a regional scale. Based on long-temporal multisource data, this paper uses the water balance and empirical Bayesian kriging (EBK) methodology to analyze the process and explore the mechanisms of eco-hydrological environment change in the Yinchuan Plain (YCP), an irrigated oasis in the upper reaches of Yellow River along the Silk Road Economic Belt. The results indicate that, after nearly 20 years of water-saving efforts, the total mean groundwater depth in the whole YCP increased 1.03 m in the irrigation period, and the increased depth of groundwater in the irrigation period is 0.70 m greater than the non-irrigation period. Average groundwater total dissolved solute (TDS) increased 5.7%, the increase in the northern YCP 4.2% higher than in the southern YCP, showing a slight tendency of salinization. Different from groundwater, soil salinity increased 3.64% in the southern YCP and decreased 50.57% in the northern YCP, the proportion of salinity area declined from 53.0 to 30.2%, exhibiting a differentiated and generally desalinizing trend. NDVI is increasing and the restoration effect in the northern YCP is more prominent than in the southern YCP. Most notably, the regional ET calculated from water balance in the whole YCP decreased from 883.8 to 453.2 mm (about 45.8%) during the period 2000 -2017. Agricultural water-saving caused by the decreasing amount of water diversion is responsible for the ecohydrological environment change in the YCP. An effective and rational water allocation and water-saving policy following variation of eco-hydrological circulation in the YCP is urgently needed.
英文关键词	Water-saving Evapotranspiration Groundwater Soil salinity NDVI Yinchuan Plain
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000898840700001
WOS关键词	HETAO IRRIGATION DISTRICT ; YELLOW-RIVER BASIN ; GROUNDWATER RECHARGE ; SOIL SALINIZATION ; USE EFFICIENCY ; SURFACE-WATER ; EVAPOTRANSPIRATION ; IMPACTS ; SALINITY ; EVAPORATION
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398215
推荐引用方式 GB/T 7714	Mi, Lina,Tian, Juncang,Si, Jianning,et al. Eco-hydrological effects of agricultural water-saving in the Yinchuan Plain, Northwest China[J],2023,23(1).
APA	Mi, Lina,Tian, Juncang,Si, Jianning,&Chen, Yuchun.(2023).Eco-hydrological effects of agricultural water-saving in the Yinchuan Plain, Northwest China.REGIONAL ENVIRONMENTAL CHANGE,23(1).
MLA	Mi, Lina,et al."Eco-hydrological effects of agricultural water-saving in the Yinchuan Plain, Northwest China".REGIONAL ENVIRONMENTAL CHANGE 23.1(2023).