Nitrogen pollution and source identification of urban ecosystem surface water in Beijing
文献类型：SCI/SSCI论文
| 作者 | Ren Y. F. ; Xu Z. W. ; Zhang X. Y. ; Wang X. K. ; Sun X. M. ; Ballantine D. J. ; Wang S. Z. |
| 发表日期 | 2014 |
| 关键词 | nitrogen concentration spatial and seasonal variation stable nitrogen isotope urban ecosystem source taihu lake region nitrate sources chemical indicators isotope ratios ground-water river china quality denitrification contamination |
| 英文摘要 | Nitrogen contamination of surface water is a worldwide environmental problem with intensive agriculture and high population densities. We assessed the spatial and seasonal variation in concentrations of total nitrogen and different nitrogen species present in surface-water in Beijing, China. Also, chemical (NO (3) (-) -N=C1(-)) and isotopic (delta (15) N (nitrate) ) indicators were used to identify nitrate sources. The results showed that, during 2009 and 2010, nitrate nitrogen concentrations ranged from 0.7 to 7.6 mg center dot L-1, ammonium nitrogen from 0.1 to 3.4 mg center dot L-1, and total nitrogen from 2.4 to 17.0 mg center dot L-1. Inorganic nitrogen accounted for between 60 and 100% of total nitrogen at the ten monitoring sites. Nitrate nitrogen, ammonium nitrogen, and total nitrogen concentrations at the 2 downstream monitoring sites in south-eastern Beijing were significantly higher than those at the other eight upstream monitoring sites (P < 0.01). Examination of seasonal variation showed that there was a significant inverse relationship between nitrate nitrogen concentrations and precipitation, and that nitrate nitrogen concentrations peaked in the dry seasons. The information given by the delta (15) N (nitrate) values and nitrate nitrogen concentrations, combined with the NO (3) (-) -N=C1(-) ratio distribution, showed that domestic sewage was the major source of nitrate in Beijing. Methods to control and reduce sewage pollution are urgently needed to help manage surface water quality in Beijing. |
| 出处 | Frontiers of Environmental Science & Engineering |
| 卷 | 8 |
| 期 | 1 |
| 页 | 106-116 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-2201 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29637]  |
| 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 | Ren Y. F.,Xu Z. W.,Zhang X. Y.,et al. Nitrogen pollution and source identification of urban ecosystem surface water in Beijing. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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