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Assessment of groundwater contamination by NO3 (-) using geographical information system in the Zhangye Basin, Northwest China
Fang, Jing1,2; Ding, Yong-jian1,2
2010-04-01
Source PublicationENVIRONMENTAL EARTH SCIENCES
Volume60Issue:4Pages:809-816
AbstractGeographical information system (GIS) technology was used to investigate NO3 (-) concentration of groundwater in the Zhangye Basin, Northwest China. Thematic information and NO3 (-) data of groundwater from the Zhangye Basin were analyzed in a GIS environment to study the extent and variation of NO3 (-) concentration and to establish spatial relationships with corresponding land use types. About 38.8% of groundwater samples showed NO3 (-) concentration above the human affected value (13 mg/l NO3 (-)), while more than 10.2% exceeded the maximum acceptable level (50 mg/l NO3 (-)) according to WHO regulations. The spatial distribution of NO3 (-) of groundwater in the Zhangye Basin showed an obvious character of zonation; the high NO3 (-) concentration was mainly located in the city seat areas, and Zhangye City was the high-value center. The probability of over 90% for NO3 (-) concentration exceeding 13 mg/l was found in urban seat areas. The spatial analyses indicated that groundwater contamination by NO3 (-) was closely related to one specific land use class, the urban. The NO3 (-) concentration of groundwater under urban was significantly higher than that under irrigation land or sand dune. Most of the unacceptable NO3 (-) levels were found in groundwater samples assigned to urban area, but a few were also found allotted to irrigation land class. Therefore, urban source was considered the principal source of NO3 (-) contamination of groundwater in the Zhangye Basin, while irrigation land source was still a possible source of NO3 (-) contamination.
SubtypeArticle
KeywordGis No3- Concentrations Land Use Zhangye Basin Northwest China
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS KeywordLAND-USE ; NITRATE ; QUALITY ; HEALTH ; WATER
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000275785200013
PublisherSPRINGER
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/67988
Collection中国科学院地理科学与资源研究所
Corresponding AuthorFang, Jing
Affiliation1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Hehei Lab Ecohydrol & Integrated River Basin Sci, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Ecosyst Res Network, Linze Inland River Basin Res Stn, Lanzhou, Peoples R China
Recommended Citation
GB/T 7714
Fang, Jing,Ding, Yong-jian. Assessment of groundwater contamination by NO3 (-) using geographical information system in the Zhangye Basin, Northwest China[J]. ENVIRONMENTAL EARTH SCIENCES,2010,60(4):809-816.
APA Fang, Jing,&Ding, Yong-jian.(2010).Assessment of groundwater contamination by NO3 (-) using geographical information system in the Zhangye Basin, Northwest China.ENVIRONMENTAL EARTH SCIENCES,60(4),809-816.
MLA Fang, Jing,et al."Assessment of groundwater contamination by NO3 (-) using geographical information system in the Zhangye Basin, Northwest China".ENVIRONMENTAL EARTH SCIENCES 60.4(2010):809-816.
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