Ecological risk assessment of polymetallic sites Using weight of evidence approach

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Ecological risk assessment of polymetallic sites Using weight of evidence approach
	Li, Xuzhi; Wang, Meie; Chen, Weiping; Uwizeyimana, Herman
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2018-06-15
卷号	154 页码:255-262
关键词	Hazard quotient Integrated biomarker response Multidisciplinary framework Environmental risk index
ISSN号	0147-6513
文献子类	Article
英文摘要	Ecological risk assessment (ERA) of polymetallic contamination in soils has caused extensive solicitude. However, objective and feasible methods suitable for soil ERA are limited. Therefore, in this study, a multi-disciplinary and quantitative weight of evidence approach (WOE) specific to soil ecosystems was developed based on the previous WOE for aquatic ecosystems. The framework consisted of four lines of evidence (LOEs): DTPA-extractable heavy metal in soils, bioaccumulation in earthworms, integration of biomarker responses and expected community effect (multi-substance Potentially Affected Fraction, msPAF). These four LOEs were initially evaluated by each hazard quotient (HQ) of them based on the ratio to the reference (RTR) of each parameter. Then, Environmental risk index (EnvRI) integrated by HQs with different weights was calculated. At last, three sites, one for reference (N1) and two for contaminated soils (N2 and N3) were chosen to apply the modified WOE approach. Results showed that heavily contaminated site, N3 had higher HQ classification for each LOE and its EnvRI was classified as Major levels, while the EnvR1 of N2 was assigned into Moderate. What's more, HQ of biomarker response (HQ(biomarker)) integrated by RTRs of biomarkers increased gradiently with the increase of heavy metal levels in soils though irregular changes were observed for most of those biomarkers. Overall, our results indicated that the quantitative WOE framework specific to soil ERA had the advantage of obtaining a comprehensive and objective risk assessment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40526]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Li, Xuzhi,Wang, Meie,Chen, Weiping,et al. Ecological risk assessment of polymetallic sites Using weight of evidence approach[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,154:255-262.
APA	Li, Xuzhi,Wang, Meie,Chen, Weiping,&Uwizeyimana, Herman.(2018).Ecological risk assessment of polymetallic sites Using weight of evidence approach.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,154,255-262.
MLA	Li, Xuzhi,et al."Ecological risk assessment of polymetallic sites Using weight of evidence approach".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 154(2018):255-262.