Temporal-spatial variations and source identification of dissolved nitrate in the upper Han River basin, China
文献类型：期刊论文
| 作者 | Yuan, Jie1; Bu, Hongmei3; Zhang, Quanfa2 |
| 刊名 | AQUATIC ECOLOGY
 |
| 出版日期 | 2019-11-04 |
| 页码 | 13 |
| 关键词 | Nitrogen isotope River water Trace source Nitrogen pollution Distribution |
| ISSN号 | 1386-2588 |
| DOI | 10.1007/s10452-019-09728-x |
| 英文摘要 | Human activities have greatly increased the nitrogen (N) loading in rivers over the past century, and consequently, N pollution has become a severe problem in aquatic systems. Nitrate (NO3-) is the predominant form of dissolved N in aquatic environments. In the present study, we evaluated N pollution characteristics and identified N sources using an isotope tracing technique in the upper Han River, a tributary of the Yangtze River with a length of 925 km in China. The objectives of this study were to evaluate the variations of N concentrations and explore the N sources in different time periods and areas. The results revealed that NO3- had significantly higher concentrations in July (22.75 +/- 17.75 mg L-1) than that in other sampling months (14.00 +/- 10.85 mg L-1 in November, 13.70 +/- 11.55 mg L-1 in January, 4.99 +/- 6.10 mg L-1 in April), and it also presented significant spatial variations (p < 0.05) along the riverine network. Isotope analysis indicated a rather large range of isotope values, implying that the NO3- in the upper Han River originated from different sources, primarily from sewage. There was a large overlap of delta(NO3-)-N-15 values between different sources during the growing season (April/July), demonstrating the various inputs of N sources. Our results revealed the degraded water quality and poor control of N run off into the river. With the assessment of temporal-spatial variation and sources of N, improved management practices can be implemented to protect water resource and avoid further water quality deterioration in the upper Han River. |
| 资助项目 | National Natural Science Foundation of China[31570463] ; National Natural Science Foundation of China[31720103905] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000493947800001 |
| 出版者 | SPRINGER |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14817]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Zhang, Quanfa |
| 作者单位 | 1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Datun Rd,A 11, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Jie,Bu, Hongmei,Zhang, Quanfa. Temporal-spatial variations and source identification of dissolved nitrate in the upper Han River basin, China[J]. AQUATIC ECOLOGY,2019:13. |
| APA | Yuan, Jie,Bu, Hongmei,&Zhang, Quanfa.(2019).Temporal-spatial variations and source identification of dissolved nitrate in the upper Han River basin, China.AQUATIC ECOLOGY,13. |
| MLA | Yuan, Jie,et al."Temporal-spatial variations and source identification of dissolved nitrate in the upper Han River basin, China".AQUATIC ECOLOGY (2019):13. |
入库方式： OAI收割
来源：武汉植物园
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