Nitrate in shallow groundwater in typical agricultural and forest ecosystems in China, 2004-2010
文献类型：SCI/SSCI论文
| 作者 | Zhang X. Y. ; Xu Z. W. ; Sun X. M. ; Dong W. Y. ; Ballantine D. |
| 发表日期 | 2013 |
| 关键词 | Chinese Ecosystem Research Network shallow groundwater agricultural forest ecosystems nitrate concentration municipal drinking-water northern china united-states contamination pollution nitrogen plain |
| 英文摘要 | The nitrate-nitrogen (NO3--N) concentrations from shallow groundwater wells situated in 29 of the Chinese Ecosystem Research Network field stations, representing typical agro- and forest ecosystems, were assessed using monitoring data collected between 2004 and 2010. Results from this assessment permit a national scale assessment of nitrate concentrations in shallow groundwater, and allow linkages between nitrate concentrations in groundwater and broad land use categories to be made. Results indicated that most of the NO3--N concentrations in groundwater from the agro- and forest ecosystems were below the Class 3 drinking water standard stated in the Chinese National Standard: Quality Standard for Ground Water (<= 20 mg/L). Over the study period, the average NO3--N concentrations were significantly higher in agro-ecosystems (4.1 +/- 0.33 mg/L) than in forest ecosystems (0.5 +/- 0.04 mg/L). NO3--N concentrations were relatively higher (> 10 mg N /L) in 10 of the 43 wells sampled in the agricultural ecosystems. These elevated concentrations occurred mainly in the Ansai, Yucheng, Linze, Fukang, Akesu, and Cele field sites, which were located in arid and semi-arid areas where irrigation rates are high. We suggest that improvements in N fertilizer application and irrigation management practices in the arid and semi-arid agricultural ecosystems of China are the key to managing groundwater nitrate concentrations. |
| 出处 | Journal of Environmental Sciences-China |
| 卷 | 25 |
| 期 | 5 |
| 页 | 1007-1014 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-0742 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30031]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang X. Y.,Xu Z. W.,Sun X. M.,et al. Nitrate in shallow groundwater in typical agricultural and forest ecosystems in China, 2004-2010. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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