河湖连通工程形成了湿地多水源共同补给的格局，而当前补水研究侧重水文-生态过程，强调多水源的水量补给，忽略了pH、氮、磷等水质环境因子对湿地生态的影响，且未考虑湿地分区域、分时段的生态需求。为此，本项目拟挖掘不同区域、不同时期湿地生态对复杂环境因子的响应关系，量化湿地精细需求；构建湿生态系统水文-水动力-水质-生态四位一体耦合模拟模型，解析各水源及其耦合利用对湿地关键环境因子的作用机制；基于此，考虑多水源特征差异及其不确定性，挖掘多水源之间的补偿机制，确定多维情景下的多水源匹配模式，为保障湿地生态环境，切实发挥河湖连通工程的综合效益提供决策支持和科学依据，进而为推进我国水生态文明建设做出贡献。

The river-lake connecting project has led to a multi-water sources replenishment pattern for wetland. Existed studies focused more on the eco-hydrological process and water supply in terms of quantity, while neglecting the effects of certain water quality indexes such as pH, nitrogen and phosphorus, and without consideration of the regional and periodical ecological needs of wetland. Therefore, this study explores the responses of ecological species to various environmental elements in different regions and during different time periods, and quantifies the specific needs of wetland. By establishing a four-in-one coupling model of hydrology-hydrodynamic-water quality-ecology, the influencing mechanisms of multi-water sources on the key environmental factors are analyzed. Based on this, considering the different characteristics of water sources and their uncertainties, the complementary mechanisms among multiple water sources are revealed and further applied for determining the regulation strategies under multi-water sources replenishment pattern. This study can provide decision support and scientific basis for wetland conservation and restoration, as well as for ensuring the maximum comprehensive efficiency of eco-hydraulic project, therefore making a contribution to the construction of ecological civilization nationwide.