气候变化领域集成服务门户(CCPortal): Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model

CCPortal

DOI	10.1080/10807039.2017.1405722
	Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model
	Wen, Xiaohu; Feng, Qi; Lu, Jian; Wu, Jun; Wu, Min; Guo, Xiaoyan
发表日期	2018
ISSN	1080-7039
EISSN	1549-7860
卷号	24 期号:4
英文摘要	Due to the intensive and complicated human activities, the identification of nitrate pollution source of coastal aquifer is usually a challenge. This study firstly adopted stable isotope technique and stable isotope analysis in R (SIAR) model to identify the nitrate sources and contribution proportions of different sources in typical coastal groundwater of northern China. The results showed that about 91.5% of the groundwater samples illustrated significantly high nitrate concentrations exceeding the maximum WHO drinking water standard (50mg/l), reflecting the high risk of groundwater nitrate pollution in the coastal area. A total of 57 sampling sites were classified into three groups according to hierarchical cluster analysis (HCA). The N-15-NO3- and O-18-NO3- values of groundwater samples from Group C (including nine samples) were much higher than those from Group A (including 40 samples) and Group B (including 8 samples). SIAR results showed that NH4+ fertilizer was the dominant nitrate source for groundwater samples of Groups A and B while manure and sewage (M&S) served as dominant source for Group C. This study provided essential information on the high risk and pollution sources of coastal groundwater nitrate of northern China.
关键词	groundwater nitrate pollution source identification dual nitrate isotopes hierarchical cluster analysis stable isotope analysis in R model
学科领域	Biodiversity & Conservation; Environmental Sciences & Ecology
语种	英语
WOS研究方向	Biodiversity Conservation ; Environmental Sciences
来源期刊	HUMAN AND ECOLOGICAL RISK ASSESSMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/112013
作者单位	Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wen, Xiaohu,Feng, Qi,Lu, Jian,et al. Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model[J]. 中国科学院西北生态环境资源研究院,2018,24(4).
APA	Wen, Xiaohu,Feng, Qi,Lu, Jian,Wu, Jun,Wu, Min,&Guo, Xiaoyan.(2018).Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model.HUMAN AND ECOLOGICAL RISK ASSESSMENT,24(4).
MLA	Wen, Xiaohu,et al."Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model".HUMAN AND ECOLOGICAL RISK ASSESSMENT 24.4(2018).