Land use mediates riverine nitrogen export under the dominant influence of human activities
Bibliographic Data
| ID | 15544698 |
|---|---|
| Authors | Binhui Chen (0000-0001-6540-6827, Zhejiang University), Scott X Chang (0000-0002-7624-439X, University of Alberta), Shu Kee Lam (0000-0001-7943-5004, The University of Melbourne), J W Erisman (0000-0001-5058-7012, Louis Bolk Instituut), Baojing Gu (0000-0003-3986-3519, Zhejiang University, corresponding author) |
| Year | 2017 |
| Volume | 12 |
| Issue | 9 |
| Pages | 094018-094018 |
| Publication date | 2017-09-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/aa84bc |
| OpenAlex | W2755694277 |
| Language | EN |
| Citations received | 2 |
| References cited | 38 |
Riverine nitrogen (N) export is a crucial process that links upstream and downstream ecosystems and coastal zones. However, the driving forces of riverine N export that is closely related to water N pollution are still not well understood. In this study, we used a mass balance approach to quantify the sources of N discharge and analyzed the effect of land use composition on riverine N export, taking Zhejiang Province, China as a case study. We found that the total reactive N discharge to rivers in Zhejiang increased from 0.22 to 0.26 Tg yr -1 from 2000 to 2015. At the watershed scale, our estimate of N export agrees well with the monitored riverine N concentration in the eight major watersheds in Zhejiang. Direct discharge of domestic wastewater and effluents from wastewater treatment plants are dominant sources of riverine N export, followed by agricultural non-point sources. Although riverine N export increases with the increasing proportion of urban and agricultural land uses, we did not find any relationship between land use change and changes in riverine N export. This suggests that the dominant factor affecting riverine N export should be human activities (e.g. wastewater discharge and fertilization level), while land use only mediates riverine N export
Agricultural land · Agriculture · Biology · Ecosystem · Effluent · Hydrology (agriculture · Land use · Land use, land-use change and forestry · Nitrogen · Nutrient pollution · Wastewater · Watershed · Chemistry · Environmental Science · Groundwater and Isotope Geochemistry · Soil and Water Nutrient Dynamics · Water Quality and Pollution Assessment · Ecology · Environmental Engineering · Pollution
| Unique citing works | 2 |
|---|---|
| Citations per year | 0,33 |
| Citation span | 2020 - 2022 (3) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 2 |