Model characteristics
- Model name: MARINA-Nutrients
- Version: China-3.0
- Application: China
- Scales: sub-basins, grid of 0.5˚, country and polygon (intersect of grid and county), annual
- Period: 2012
- Pollutants: dissolved inorganic (DIN, DIP), organic (DON, DOP) nitrogen and phosphorus
- Sources: point (sewage) and diffuse (agriculture, natural areas)
- Main inputs: agricultural activities, sewage systems, land use, hydrology
- Main outputs: In-stream concentration of DIN, DON, DOP, and DIP, expressed in water quality classes
Modelling approach
Figure 1: Conceptual framework of the model application to China for multi-scale analysis (based on Chen et al., 2019, 2022)
Model outputs (example)
Figure 2: River export of dissolved inorganic nitrogen (kton/year). Modified from Chen et al., (2019; with CC-BY-NC-ND license)