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Modified DRASTIC model for groundwater vulnerability to nitrate contamination in the Dagujia river basin, China

文献类型：期刊论文

作者Wei, Aihua1,3,4; Bi, Pan1,3,4; Guo, Jie1,3,4; Lu, Shuai1,3,4; Li, Duo1,3,4
刊名WATER SUPPLY
出版日期2021-06-01
卷号21期号:4页码:1793-1805
关键词DRASTIC integrated model land-use nitrate pollution SVM vulnerability
ISSN号1606-9749
DOI10.2166/ws.2021.018
英文摘要Due to rapid economic growth and over-exploitation of groundwater, nitrate pollution in groundwater has become very serious. The main objective of this study is to modify the DRASTIC model to identify groundwater vulnerability to nitrate pollution. The DRASTIC model was firstly used to analyze the intrinsic vulnerability. The DRASTIC model with the inclusion of a land-use factor (DRASTIC-LU) was put forward to map the specific vulnerability of groundwater. Furthermore, the support vector machine (SVM) was introduced to avoid the drawback of the overlay and index methods, and the improved integrated models of DRASTIC + SVM and DRASTIC-LU + SVM were built. Moreover, 103 groundwater samples were collected for building and validating the models. The Root Mean Squared Error (RMSE) of DRASTIC, DRASTIC-LU, DRASTIC + SVM, and DRASTIC-LU + SVM was found to be 0.853, 0.755, 0.631, and 0.502, respectively. The model DRASTIC-LU was more precise than the original one. The results also showed that the integrated model using SVM exhibited better correlation between the vulnerability value and the nitrate pollution. The study indicated that the modified models including the land-use factor as well as SVM in the DRASTIC model were more suitable to assess the groundwater vulnerability to nitrate.
WOS关键词SUPPORT VECTOR MACHINE
资助项目Natural Science Foundation of Science and Technology Department in Hebei Province[D2019403194] ; Graduate Students Teaching Case of Hebei Province[KCJSZ2019090] ; Graduate Students Teaching Case of Hebei Province[KCJSZ2019092] ; Graduate Students Teaching Case of Hebei Province[KCJSZ2021098] ; Teaching Research Project of Hebei GEO University[2018J28]
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Water Resources
语种英语
WOS记录号WOS:000664792700031
出版者IWA PUBLISHING
资助机构Natural Science Foundation of Science and Technology Department in Hebei Province ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Teaching Research Project of Hebei GEO University ; Teaching Research Project of Hebei GEO University ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Teaching Research Project of Hebei GEO University ; Teaching Research Project of Hebei GEO University ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Teaching Research Project of Hebei GEO University ; Teaching Research Project of Hebei GEO University ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Natural Science Foundation of Science and Technology Department in Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Graduate Students Teaching Case of Hebei Province ; Teaching Research Project of Hebei GEO University ; Teaching Research Project of Hebei GEO University
源URL[http://ir.iggcas.ac.cn/handle/132A11/101972]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Li, Duo
作者单位1.Hebei Prov Collaborat Innovat Ctr Sustainable Uti, Shijiazhuang 050031, Hebei, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Hebei GEO Univ, Sch Water Resources & Environm, Shijiazhuang 050031, Hebei, Peoples R China
4.Hebei Prov Key Lab Sustained Utilizat & Dev Water, Shijiazhuang 050031, Hebei, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Aihua,Bi, Pan,Guo, Jie,et al. Modified DRASTIC model for groundwater vulnerability to nitrate contamination in the Dagujia river basin, China[J]. WATER SUPPLY,2021,21(4):1793-1805.
APA Wei, Aihua,Bi, Pan,Guo, Jie,Lu, Shuai,&Li, Duo.(2021).Modified DRASTIC model for groundwater vulnerability to nitrate contamination in the Dagujia river basin, China.WATER SUPPLY,21(4),1793-1805.
MLA Wei, Aihua,et al."Modified DRASTIC model for groundwater vulnerability to nitrate contamination in the Dagujia river basin, China".WATER SUPPLY 21.4(2021):1793-1805.

入库方式： OAI收割

来源：地质与地球物理研究所

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