The cycle of nitrogen in river systems: sources, transformation, and flux

X **a, S Zhang, S Li, L Zhang, G Wang… - … science: Processes & …, 2018‏ - pubs.rsc.org
Nitrogen is a requisite and highly demanded element for living organisms on Earth.
However, increasing human activities have greatly altered the global nitrogen cycle …

Integrating urban water fluxes and moving beyond impervious surface cover: A review

CJ Oswald, C Kelleher, SH Ledford, KG Hopkins… - Journal of …, 2023‏ - Elsevier
Though urban areas represent a small fraction of global land cover, they have an outsized
impact on hydrological processes. Within these areas, the pathways that water follows are …

Nitrate pollution source apportionment, uncertainty and sensitivity analysis across a rural-urban river network based on δ15N/δ18O-NO3− isotopes and SIAR …

X Ji, L Shu, W Chen, Z Chen, X Shang, Y Yang… - Journal of Hazardous …, 2022‏ - Elsevier
Nitrate pollution is of considerable global concern as a threat to human health and aquatic
ecosystems. Nowadays, δ 15 N/δ 18 O-NO 3− combined with a Bayesian-based SIAR model …

Systematic tracing of nitrate sources in a complex river catchment: an integrated approach using stable isotopes and hydrological models

SH Kim, DH Lee, MS Kim, HP Rhee, J Hur, KH Shin - Water Research, 2023‏ - Elsevier
Quantitative estimation for tracking the transport of various nitrate sources is required to
effectively manage nitrate loading in complex river systems. In this study, we validated an …

Quantitative identification of nitrate pollution sources and uncertainty analysis based on dual isotope approach in an agricultural watershed

X Ji, R **e, Y Hao, J Lu - Environmental Pollution, 2017‏ - Elsevier
Quantitative identification of nitrate (NO 3−-N) sources is critical to the control of nonpoint
source nitrogen pollution in an agricultural watershed. Combined with water quality …

Toward catchment hydro‐biogeochemical theories

L Li, PL Sullivan, P Benettin, OA Cirpka… - Wiley …, 2021‏ - Wiley Online Library
Headwater catchments are the fundamental units that connect the land to the ocean.
Hydrological flow and biogeochemical processes are intricately coupled, yet their respective …

Assessing contributions of agricultural and nonagricultural emissions to atmospheric ammonia in a Chinese megacity

Y Chang, Z Zou, Y Zhang, C Deng, J Hu… - … science & technology, 2019‏ - ACS Publications
Ammonia (NH3) is the predominant alkaline gas in the atmosphere contributing to formation
of fine particles—a leading environmental cause of increased morbidity and mortality …

Sources and mechanisms of nitrate and orthophosphate transport in urban stormwater runoff from residential catchments

YY Yang, GS Toor - Water research, 2017‏ - Elsevier
Nutrients export from residential catchments contributes to water quality impairment in urban
water bodies. We investigated the concentrations, transport mechanisms, and sources of …

Nitrate transformation and source tracking of rivers draining into the Bohai Sea using a multi-tracer approach combined with an optimized Bayesian stable isotope …

X Ren, FJ Yue, J Tang, C Li, SL Li - Journal of Hazardous Materials, 2024‏ - Elsevier
Excessive levels of NO 3-can result in multiple eco-environmental issues due to potential
toxicity, especially in coastal areas. Accurate source tracing is crucial for effective pollutant …

The shallow and deep hypothesis: Subsurface vertical chemical contrasts shape nitrate export patterns from different land uses

W Zhi, L Li - Environmental Science & Technology, 2020‏ - ACS Publications
Eutrophication has threatened water resources worldwide, yet mechanistic understanding
on controls of nutrient export remains elusive. This work tests the shallow and deep …