Experiment on Sediment Ammonia Nitrogen Release of Chaohu Lake in Varying Hydrodynamic Disturbance

Shallow water has low depth, and hydrodynamic conditions may change with the effect of wind waves, resulting in sediment suspension pollutant release. To investigate influence incipient motion on ammonia nitrogen (NH3-N) release shallow lakes under disturbance, we monitored concentration overlying sediments Chaohu Lake static, weak, strong disturbance analyzed rate based these concentrations. In static condition, particles surface moved individually (individual movement), was 9.59 mg/m2/day. When weak a small proportion started to move (small increased 34.21 further strengthened, most (general 77.04 Distribution showed that varied western area followed by eastern area, central had lowest rate. The daily ranged from 8742.3 kg 61,008.59 kg. this experiment, combined movement release, which provides new reference for study management other lakes.