期刊
ENVIRONMENTAL POLLUTION
卷 205, 期 -, 页码 139-144出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2015.05.031
关键词
Pollution source; Mitigation; Regional pollution; Human activities
资金
- National Natural Science Foundation of China [41201502]
- Natural Science Foundation of Zhejiang Province [LR15G030001, LQ14G030011]
- Key Program of the National Social Science Foundation of China [14AZD124]
Excess nitrogen inputs to terrestrial ecosystems via human activities have deteriorated water qualities on regional scales. Urban areas as settlements of over half global population, however, were usually not considered in the analysis of regional water pollution. Here, we used a 72-month monitoring data of water qualities in Hangzhou, China to test the role of urban rives in regional nitrogen pollution and how they response to the changes of human activities. Concentrations of ammonium nitrogen in urban rivers were 3-5 times higher than that in regional rivers. Urban rivers have become pools of reactive nitrogen and hotspots of regional pollution. Moreover, this river pollution is not being measured by current surface water monitoring networks that are designed to measure broader regional patterns, resulting in an underestimation of regional pollution. This is crucial to urban environment not only in China, but also in other countries, where urban rivers are seriously polluted. (C) 2015 Elsevier Ltd. All rights reserved.
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