干旱区生态环境知识资源中心(Arid): Hotspot and accumulated hotspot analysis for assessment of groundwater quality and pollution indices using GIS in the arid region of Iran

Arid

DOI	10.1007/s11356-023-27177-w
	Hotspot and accumulated hotspot analysis for assessment of groundwater quality and pollution indices using GIS in the arid region of Iran
	Mohamadi, Sedigheh; Honarmand, Mehdi; Ghazanfari, Sadegh; Hassanzadeh, Reza
通讯作者	Mohamadi, S
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2023
卷号	30 期号:27 页码:69955-69976
英文摘要	Because groundwater quality representatives for drinking usage (i.e., Schuler method, Nitrate and Groundwater Quality Index) have been abruptly changing due to extreme events induced by global climate change and over-abstracting, applying an efficient tool for their assessments is vitally important. While hotspot analysis is introduced as an efficient tool concentrating on sharp changes in groundwater quality, it has not been closely examined. Accordingly, this study is an attempt to determine the groundwater quality proxies and assess them through hotspot and accumulated hotspot analyses. To this end, a GIS-based hotspot analysis (HA) applying Getis-Ord Gi* statistics was used. The accumulated hotspot analysis was launched to identify the Groundwater Quality Index (AHA-GQI). Moreover, Schuler method (AHA-SM) was utilized to determine the maximum levels (ML) for the hottest hotspot and the lowest levels (LL) for the coldest cold-spot, and compound levels (CL). The results revealed that a significant correlation (r = 0.8) between GQI and SM was observed. However, the correlation between GQI and nitrate was not significant and the correlation between SM and nitrate was so low (r = 0.298, sig > 0.05). The results also demonstrated that using hotspot analysis on only GQI, the correlation between GQI and SM increased from 0.8 to 0.856, while using hotspot analysis on both GQI and SM increased the correlation to 0.945. Likewise, when GQI was subjected to hotspot analysis and SM underwent accumulated hotspot analysis (i.e., AHA-SM (ML)), the correlation degree increased to the highest extent (i.e., 0.958), indicating the usefulness of including the hotspot analysis and accumulated hotspot analysis in the evaluation of groundwater quality.
英文关键词	GQI Hotspot Nitrate Kriging Arid land
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000981878000003
WOS关键词	DRINKING-WATER ; NITRATE ; STATE ; AREAS
WOS类目	Environmental Sciences
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/2XILL650/396271
推荐引用方式 GB/T 7714	Mohamadi, Sedigheh,Honarmand, Mehdi,Ghazanfari, Sadegh,et al. Hotspot and accumulated hotspot analysis for assessment of groundwater quality and pollution indices using GIS in the arid region of Iran[J],2023,30(27):69955-69976.
APA	Mohamadi, Sedigheh,Honarmand, Mehdi,Ghazanfari, Sadegh,&Hassanzadeh, Reza.(2023).Hotspot and accumulated hotspot analysis for assessment of groundwater quality and pollution indices using GIS in the arid region of Iran.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,30(27),69955-69976.
MLA	Mohamadi, Sedigheh,et al."Hotspot and accumulated hotspot analysis for assessment of groundwater quality and pollution indices using GIS in the arid region of Iran".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 30.27(2023):69955-69976.