Assessment of groundwater contamination by NO3 (-) using geographical information system in the Zhangye Basin, Northwest China
文献类型：期刊论文
| 作者 | Fang, Jing1,2; Ding, Yong-jian1,2 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 60期号:4页码:809-816 |
| 关键词 | Gis No3- Concentrations Land Use Zhangye Basin Northwest China |
| 文献子类 | Article |
| 英文摘要 | Geographical 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. |
| WOS关键词 | LAND-USE ; NITRATE ; QUALITY ; HEALTH ; WATER |
| 语种 | 英语 |
| WOS记录号 | WOS:000275785200013 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/67987]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Fang, Jing |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：地理科学与资源研究所
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