Basin characteristics determine longitudinal distribution and source composition of nitrogen pollution in a multi-tributary mountain river basin

•MixSIAR showed that cropland contributed nearly 50% of nitrate in Hanjiang River.•Contribution rates of wastewater and forest & grassland ranged from 20% to 30%.•BC indirectly affected nitrate source distribution by directly affecting LU and HA.•Contribution rate of each LU type was related to...

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Bibliographic Details
Published in:Ecological indicators 2025-11, Vol.180, p.114309, Article 114309
Main Authors: Wen, Huiyu, Liu, Yaxuan, Wu, Suijia, Ye, Sisi, Ren, Mi, Yang, Yanyan, Liu, Jiabin, Li, Ming
Format: Article
Language:English
Subjects:
altitude
ammonium nitrogen
Basin characteristics
basins
cropland
estuaries
forests
grasslands
humans
Isotope
isotopes
MixSIAR
nitrate nitrogen
nitrates
Nitrogen
pollution
riparian areas
rivers
Source identification
wastewater
water
watersheds
Citations: Items that this one cites
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