Nitrogen loss characteristics via surface runoff from two typical agricultural catchments into Yuqiao Reservoir-the important drinking water source area for Tianjin city in semi-arid North China were investigated through two-year in-situ monitoring and indoor chemical analysis.

Denitrification of river and reservoir sediments in the Jurong reservoir agricultural watershed,Qinhuai River basin

Typical agricultural watershed was selected to study the interactions between soil matrix and non-point source P-pollutants in surface runoff under simulative conditions.

Non-point source pollution caused an important environmental and water quality problem,nutrients loss from agricultural catchments is primary concern.

Effects of hydrological factors on nitrogen loss in small agricultural catchments;