The sed-export is calculated with the SDR-approach.
SDR = function of:
- watershed area (km2)
- relief ratio (m/km) (average divide height vs. river valley length)
- curve number value (Average for watershed)
it seams it does not matter how far away (1m or 10km) from the actual stream a heavily erodible agriculture parcel is for the sed-export calculations. In other words: a pixel or a parcel in the same catchment will have the same impact very next to a river (the stream) or 10 km far away. Am i wrong?