| Method |
Application examples |
Study location |
Source |
| 1. Statistical methods |
A linear correlation between the unit load of TP, TN and sediment was established by measuring single event data. |
Heihe, Hanjing and Danjing Watersheds |
[27] |
| 2. ECM |
Relation between nitrogen export and land use was analyzed by using hydrological modeling method. |
Hujiashan Watershed of Danjiangkou Reservoir |
[28] |
| 3.IECM |
Precipitation and terrain impact factors were introduced to improve the ECM. |
Upper Reach of the Yangze River |
[29] |
| 4. Hydrograph Separation Method |
Divide pollution load into point source and NPS. |
Weihe River Watershed |
[30] |
