干旱区生态环境知识资源中心(Arid): Evaluating climate and irrigation effects on spatiotemporal variabilities of regional groundwater in an arid area using EOFs

Arid

DOI	10.1016/j.scitotenv.2019.136147
	Evaluating climate and irrigation effects on spatiotemporal variabilities of regional groundwater in an arid area using EOFs
	Yue, Weifeng 1,2; Meng, Kaikai 1,2; Hou, Kaixuan 1,2; Zuo, Rui 1,2; Zhang, Bo-Tao 1,2; Wang, Guoqiang 1
通讯作者	Yue, Weifeng
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	709
英文摘要	Ground water level is an important variable in the evolution process of ecological environment systems. However, spatiotemporal changes in groundwater level are attributed to the comprehensive influence of natural and anthropogenic activities. Therefore, understanding the major driving forces to changes in spatiotemporal patterns of groundwater level is essential for sustainable utilization of regional groundwater and sustaining healthy ecosystems, especially in arid areas. In this study, based on monthly observations of depth to groundwater table (DTGT) from 67 monitoring wells during 2001-2010 in the Yichang Irrigation Sub-district (YISD) of the Hetao Irrigation District (HID), which is located inNorthwest China with an arid climate, the empirical orthogonal function (EOF) method was used to analyze the spatiotemporal variations of DTGT and the major driving forces. The EOF analysis results showed that the first two spatial structures (EOF1 and EOF2) of DTGT were found in this region, which explained over 65% and 8% of the spatial variation of DTGT, respectively. Meteorological factors (evaporation and temperature) were the first leading factors to drive the temporal pattern of the first expansion coefficient (EC1) corresponding to the EOF1 at intra-annual scale as well as inter-annual scale. Particularly, temperature controlled the EC1 pattern during the freezing period from December to March. Soil texturewas shown to have good correlations with the spatial patterns of DTGT, although these correlations diminished when the depth exceeded 250 cm. This study provides strong evidence that the principal spatiotemporal variations of groundwater can be effectively extracted by the EOF method, thereby obtaining integrated views of the relationships between the groundwater system and meteorological and anthropogenic factors. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Spatiotemporal variations Empirical orthogonal function Depth to groundwater table Driving forces Hetao Irrigation District
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000512281700087
WOS关键词	EMPIRICAL ORTHOGONAL FUNCTIONS ; SPATIAL-DISTRIBUTION ; SOIL-MOISTURE ; CARBON FLUX ; PATTERNS ; RECHARGE ; EVAPOTRANSPIRATION ; DISTRICT ; PRECIPITATION ; VEGETATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315513
作者单位	1.Beijing Normal Univ, Coll Water Sci, Xinjiekouwai St 19, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Engn Res Ctr Groundwater Pollut Control & Remedia, Minist Educ, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Yue, Weifeng,Meng, Kaikai,Hou, Kaixuan,et al. Evaluating climate and irrigation effects on spatiotemporal variabilities of regional groundwater in an arid area using EOFs[J]. 北京师范大学,2020,709.
APA	Yue, Weifeng,Meng, Kaikai,Hou, Kaixuan,Zuo, Rui,Zhang, Bo-Tao,&Wang, Guoqiang.(2020).Evaluating climate and irrigation effects on spatiotemporal variabilities of regional groundwater in an arid area using EOFs.SCIENCE OF THE TOTAL ENVIRONMENT,709.
MLA	Yue, Weifeng,et al."Evaluating climate and irrigation effects on spatiotemporal variabilities of regional groundwater in an arid area using EOFs".SCIENCE OF THE TOTAL ENVIRONMENT 709(2020).