Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions,Ministry of Education,College of Environment and Planning,Henan University,Kaifeng 475004,China;
Institute of Surface-Earth System Science,School of Earth System Science,Tianjin University,Tianjin 300072,China;
Tianjin Key Laboratory of Earth’s Critical Zone Science and Sustainable Development in Bohai Rim,Tianjin University,Tianjin 300072,China;
Thermal stratification; RWCS; Denitrification; Nitrogen transformation; Reservoir;