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dc.contributor.authorGu, Baojing
dc.contributor.authorZhu, Yimei
dc.contributor.authorChang, Jie
dc.contributor.authorPeng, Chanhui
dc.contributor.authorLiu, Dong
dc.contributor.authorMin, Yong
dc.contributor.authorLuo, Weidong
dc.contributor.authorHowarth, R. W.
dc.contributor.authorGe, Y.
dc.date.accessioned2019-01-17T14:44:35Z
dc.date.available2019-01-17T14:44:35Z
dc.date.issued2011-03-01
dc.identifier.citationEnviron. Res. Lett. 6 014011
dc.identifier.urihttps://hdl.handle.net/1813/60817
dc.description.abstractHuman activity greatly influences nitrogen (N) pollution in urbanized and adjacent areas. We comprehensively studied the N cycling in an urban-rural complex system, the Greater Hangzhou Area (GHA) in southeastern China. Our results indicated that subsurface N accumulation doubled, riverine N export tripled and atmospheric N pollutants increased 2.5 times within the GHA from 1980-2004. Agriculture was the largest N pollution source to air and water before 2000, whereas industry and human living gradually became the primary N pollution sources with the socioeconomic development. Based on the sensitivity analysis, we developed a scenario analysis to quantify the effects of technology and policy on environmental N dynamics. The fertilization reduction scenario suggested that the groundwater N pollution could decrease by 17% with less than a 5% reduction in crop production; the N effluent standard revision scenario led to a surface water N pollution reduction of 45%; the constructed wetlands implementation scenario could reduce surface water pollution by 43%-64%. Lastly, the technological improvement scenario mitigated atmospheric N pollution by 65%. Technologies play a key role in atmospheric N pollution control, policies mainly contribute to groundwater N pollution control, while technology and policy both work on surface water N mitigation within an urban-rural complex.
dc.description.sponsorshipWe are grateful for the funding provided by the National Science Foundation of China 30970281 and 30870235 and the Y C Tang Disciplinary Development Fund.
dc.language.isoen_US
dc.publisherInstitute of Physics Publishing
dc.subjectair pollution
dc.subjectconstructed wetland
dc.subjectdeveloping country
dc.subjectfertilization
dc.subjectwastewater treatment
dc.subjectwater pollution
dc.titleThe role of technology and policy in mitigating regional nitrogen pollution
dc.typearticle
dcterms.licensehttps://hdl.handle.net/1813/60288
dc.relation.doihttps://doi.org/10.1088/1748-9326/6/1/014011


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