To study hydrological features and physical and chemical characteristics of urban stream located in the plain river network area in the process of water resources regulation, and to discuss the forming and composition of @entity1568 in urban stream based on water resources regulation. Effects of water regulation on the @entity3104 release from sediments in urban stream were studied under the condition of experimental simulation. The results showed that diurnal variation of water depth under the action of water resources regulation was significant. The value of DO in the overlying water along the water resources regulation path tended to decrease, while the concentration of @entity14324 index tended to increase. The concentration of @entity1507 in overlying water along the water resources regulation path gradually decreased, while the concentration of @entity3104 significantly increased. DO and @entity14324 index were the main factors influencing the concentrations of @entity1507 and @entity3104 in overlying water. @entity3104 released from the sediments was an important source of @entity3104 in overlying water. Water resources regulation had a significant influence (P < 0. 05) on the concentration of @entity3104 in overlying water, but had no significant influence on the amount of cumulative @entity3104 released from sediments (P > 0. 05).

[Migration and transformation of XXXX in urban stream located in plain river-net area based on water resources regulation].

@entity3104 :: ('MESH:D000644', 'Chemical') :: ['Ammonium', 'ammonium'] @entity14324 :: ('MESH:C048856', 'Chemical') :: ['permanganate'] @entity1568 :: ('MESH:D009584', 'Chemical') :: ['nitrogen'] @entity1507 :: ('CHEBI:48107', 'Chemical') :: ['nitrate']
@entity1568 :: (MESH:D009584,Chemical) :: ['nitrogen']
