In response to the severe flood control challenges in the Taihu Lake Basin,this study focuses on the coordinated operation of newly constructed projects-such as the Xinmeng River and Xingou River-and the existing wate...In response to the severe flood control challenges in the Taihu Lake Basin,this study focuses on the coordinated operation of newly constructed projects-such as the Xinmeng River and Xingou River-and the existing water conservancy system.Addressing the drainage difficulties in the upstream Huxi Area and the Wucheng-Xixi-Yuxi Area,the research adopts a technical framework of"scenario-driven analysis-scheme simulation-multi-objective decision-making."Through simulation and optimization based on mathematical models and an intelligent decision-support system,an operationally feasible joint operation scheme is proposed.The results demonstrate that optimized joint operation can significantly unleash the flood control potential of water conservancy projects,providing valuable methodological insights and a practical reference for coordinated operation and intelligent decision-making in complex river network regions.展开更多
Although food supplementation is well known to increase population density,there is still debate on the causative effects of food supplementation on reproduction,survival,and immigration.Large manipulative experiments...Although food supplementation is well known to increase population density,there is still debate on the causative effects of food supplementation on reproduction,survival,and immigration.Large manipulative experiments,which exclude any confounding effects of dispersal and predation,are essential for clarifying the debate.In this study,we investigated the effects of food supplementation on Brandt's vole population dynamics and plant community in eight large enclosures(0.48 ha each) from2010 to 2014.Food supplementation showed significant positive effects on population density due to increases in recruitment;however,it showed a complex effect on survival of voles:positive in non-breeding seasons,but negative in breeding seasons.In addition,food supplementation increased the quality of plants(as reflected by increased crude protein content),but decreased the quantity of less preferred plants in experimental enclosures.Thus,food seems to have direct positive effects on small rodents through improvement of food supply and indirect negative effects through food-induced density-dependent effects,and may have long-term effects on rodents through altering plant community composition and abundance.展开更多
文摘In response to the severe flood control challenges in the Taihu Lake Basin,this study focuses on the coordinated operation of newly constructed projects-such as the Xinmeng River and Xingou River-and the existing water conservancy system.Addressing the drainage difficulties in the upstream Huxi Area and the Wucheng-Xixi-Yuxi Area,the research adopts a technical framework of"scenario-driven analysis-scheme simulation-multi-objective decision-making."Through simulation and optimization based on mathematical models and an intelligent decision-support system,an operationally feasible joint operation scheme is proposed.The results demonstrate that optimized joint operation can significantly unleash the flood control potential of water conservancy projects,providing valuable methodological insights and a practical reference for coordinated operation and intelligent decision-making in complex river network regions.
基金supported by National Basic Research Program of China(2007CB109102)
文摘Although food supplementation is well known to increase population density,there is still debate on the causative effects of food supplementation on reproduction,survival,and immigration.Large manipulative experiments,which exclude any confounding effects of dispersal and predation,are essential for clarifying the debate.In this study,we investigated the effects of food supplementation on Brandt's vole population dynamics and plant community in eight large enclosures(0.48 ha each) from2010 to 2014.Food supplementation showed significant positive effects on population density due to increases in recruitment;however,it showed a complex effect on survival of voles:positive in non-breeding seasons,but negative in breeding seasons.In addition,food supplementation increased the quality of plants(as reflected by increased crude protein content),but decreased the quantity of less preferred plants in experimental enclosures.Thus,food seems to have direct positive effects on small rodents through improvement of food supply and indirect negative effects through food-induced density-dependent effects,and may have long-term effects on rodents through altering plant community composition and abundance.
