Numerical Simulation of River–Lake Aquatic Ecosystems
Building a multi-scale coupled hydrodynamic–water-quality–ecology model system that forms a model–observation–intelligence digital-twin loop.
For complex engineered waters and operating scenarios, this direction builds a multi-scale coupled hydrodynamic–water-quality–ecology model system (1D/2D/3D) on platforms such as CE-QUAL-W2, Delft3D and EFDC, resolving stratification and density currents, nutrient cycling, phytoplankton competition and deposition–resuspension. It fuses long-term monitoring, enclosure experiments and UAV/satellite remote sensing, reduces uncertainty through data assimilation (EnKF/4D-Var), proposes Zeu/Zmix-threshold bloom-risk identification and scenario simulation, and supports eco-hydrological operation through multi-objective optimisation. Key tasks include bloom forecasting, ecosystem-process research and watershed water-resource optimisation.
Research projects in this area
Water-level fluctuation control of tributary-bay blooms in the Three Gorges Reservoir and ecological operation methods
Agricultural structure optimization and water-resource allocation for water-quality assurance
Effects of cascade hydropower development on biogenic substances in the Lancang River basin
Collaborative research on bloom mechanisms and control in riverine reservoirs
Phytoplankton habitat evolution and bloom forecasting in the Three Gorges Reservoir
Joint multi-reservoir operation for tributary bloom control: research and demonstration
Assessment and regulation of cumulative thermal effects in cascade reservoirs based on basin water-temperature lines
Stratification–mixing state identification and its effect on vertical algal distribution
Preferential-flow-based optimization of green-roof plant–substrate structures
Selected publications in this area
- 2025
Hong Yang, Defu Liu, Henglin Xiao, Julian R. Thompson, Roger J. Flower, Heang Sophal, Tomos Avent (2025). “Better plans are needed for mitigating the ecological impacts of Cambodia's Funan Techo Canal.” NATURE ECOLOGY & EVOLUTION linkDOI
- 2025
Ying Liu*, Ziyan Lu, Genghua Wu, Defu Liu, Henglin Xiao, Hong Yang, Heyun Wang, Jinhong Feng (2025). “Nitrogen and phosphorus release from a dominant plant in the water level fluctuation zone of the Three Gorges Reservoir.” AQUATIC SCIENCES , 87: 78. linkDOI
- 2025
Luo J, Liu Y*, Liu D, et al. (2025). “Influence of the in-stream structures and parameters variation on transient storage.” ECOLOGICAL ENGINEERING , 202: 107242. linkDOI
- 2025
Jiaqi Zhang, Jun Ma*, Yaqian Xu, Defu Liu, Zhanpeng Wang, Zeyi Tao, Hao Wei, Ran Xiao (2025). “Methods for predicting water temperature in data-scarce areas under different climate regions of China.” WATER CYCLE , 6: 259-271.
- 2025
Li Linlin, Xiao Tao, Liu Defu, et al. (2025). “Three-dimensional hyporheic exchange driven by local riverbed scouring below the in-stream structure.” PHYSICS OF FLUIDS , 37: 022143. linkDOI
- 2024
Hong Yang, Defu Liu, Julian R. Thompson, Roger J. Flower (2024). “Combating sediment surge in Tibetan rivers.” SCIENCE , 384(6683). linkDOI
- 2023
Chuansong Weng, Yiheng Zeng, Defu Liu, Jialei Zhang, Li He* (2023). “Optimal Allocation of Agricultural Water Resources in Yanghe Watershed Considering Blue Water to Green Water Ratio.” JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
- 2023
Wenqi Zhang, Defu Liu, Xianming Chen, Xiaoguo Zhou, Yifan Ding, Jialei Zhang* (2023). “Driving factors for decoupling water resources ecological footprint and economic growth in water-deficient cities dominated by agriculture.” WATER SCIENCE AND TECHNOLOGY , 88(5): 1246-1269. linkDOI
- 2023
张佳磊, 李彦学, 刘德富, 周小国, 丁一凡, 曾一恒, 张文博 (2023). “张家口市各区县用水结构时空演变及其驱动因素分析.” 水资源保护 , 39(06): 145-151+177.
- 2022
Jinghong Feng, Defu Liu, Ying Liu*, Yi Li, Han Li, Lihui Chen, Jingwen Xiao, Jixin Liu, Jiawei Dong (2022). “Hyporheic exchange due to in-stream geomorphic structures.” JOURNAL OF FRESHWATER ECOLOGY , 37(1): 221-241. linkDOI
- 2021
杨正健, 魏辰宇, 刘德富, 纪道斌, 马骏, 王从锋 (2021). “开放水体脱氮过程及其影响因素研究进展.” 水利学报 , 52(02): 194-202+214.
- 2018
苏青青, 刘德富, 刘绿波, 纪道斌, 崔玉洁, 宋林旭, 李欣, 陈秀秀 (2018). “三峡水库蓄水期支流水体营养盐来源估算.” 中国环境科学 , 38(10): 3925-3932.
- 2016
刘德富, 杨正健, 纪道斌, 马骏, 崔玉洁, 宋林旭 (2016). “三峡水库支流水华机理及其调控技术研究.” 水利学报 , 47(03): 443-454.
