干旱区生态环境知识资源中心(Arid): A method to determine optimum ecological groundwater table depth in semi-arid areas

Arid

DOI	10.1016/j.ecolind.2022.108915
	A method to determine optimum ecological groundwater table depth in semi-arid areas
	Zhang, Rui; Wu, Jingwei; Yang, Yang; Peng, Xiang; Li, Changsen; Zhao, Qiang
通讯作者	Wu, JW ; Zhao, Q
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	139
英文摘要	Groundwater depth (GWD) is an important factor to sustain the ecological integrity of some ecosystems and is often used as an indicator of environmental quality in dry areas. Single-scale data gained from quadrat surveys is always used to establish a relationship with GWD to determine the optimum GWD. However, the randomness and uncertainty in single-scale data may result in insufficient reliability of results. To overcome this shortage, multiple growth indicators of poplar trees (Populus euphratica) in Hetao Irrigation District, including average crown width (ACW), tree height, diameter at breast height (DBH), mean ring spacing (MRC), and normalized difference vegetation index (NDVI), were acquired by field sampling and remote sensing. These indicators were used to establish relationships with the GWD by considering spatial and temporal variation to identify the optimum GWD. The cloud model was introduced and its three digital features derived from optimum groundwater depth data (expectation: Ex, entropy: En, and super-entropy: He) were calculated to construct the reverse cloud models W (Ex, En, He) for describing ecological GWD to determine the optimum ecological GWD in semi-arid areas. The results show that the optimum GWD range was 1.60-2.20 m. The cloud models obtained on spatial and temporal scales were WS (2.01, 0.07, 0.04) and WT (1.78, 0.10, 0.02), respectively. The resulting comprehensive cloud model WC (1.87, 0.14, 0.03) exhibited better variability, so 1.87 m was taken as the optimum GWD for poplars. This method can determine the regional ecological groundwater level more accurately and effectively, and provide evaluation indicators for the management of regional groundwater.
英文关键词	Hetao Irrigation District Ecological groundwater depth Growth indicators Poplar NDVI Cloud model
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000795767700001
WOS关键词	HETAO IRRIGATION DISTRICT ; COMPREHENSIVE EVALUATION ; WATER ; DYNAMICS ; IMPACTS ; CLIMATE ; PREDICTION ; MANAGEMENT ; VEGETATION ; MODEL
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392316
推荐引用方式 GB/T 7714	Zhang, Rui,Wu, Jingwei,Yang, Yang,et al. A method to determine optimum ecological groundwater table depth in semi-arid areas[J],2022,139.
APA	Zhang, Rui,Wu, Jingwei,Yang, Yang,Peng, Xiang,Li, Changsen,&Zhao, Qiang.(2022).A method to determine optimum ecological groundwater table depth in semi-arid areas.ECOLOGICAL INDICATORS,139.
MLA	Zhang, Rui,et al."A method to determine optimum ecological groundwater table depth in semi-arid areas".ECOLOGICAL INDICATORS 139(2022).