基于能量的鄱阳湖——长江相互作用表征指标研究（英文）

编号 zgly0001634844

文献类型 期刊论文

文献题名 基于能量的鄱阳湖——长江相互作用表征指标研究（英文）

作者 陈莫非  邓金运  范少英  李义天 

作者单位 StateKeyLaboratoryofWaterResourcesandHydropowerEngineeringScience  WuhanUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2018年08期

年份 2018 

分类号 P343.3 

关键词 PoyangLake  YangtzeRiver  river–lakerelationship  ThreeGorgesReservoir  characterizationindex 

文摘内容 The complex relationship between the Yangtze River and Poyang Lake controls the exchange of water and sediment between the two,and exerts effects on water resources,flooding,shipping,and the ecological environment.The theory of energy is applied in this paper to investigate the physical mechanisms that determine the nature of the contact between the Yangtze River and Poyang Lake and to establish an energy differenceindex to quantify the interactions between the two systems.Data show that Fe values for this interaction have increased since the 1950s,indicating a weakening in the river effect while the lake effect has been enhanced.Enclosure of the Three Gorges Reservoir(TGR)has also significantly influenced the relationship between the river and the lake by further reducing the impacts of the Yangtze River.The river effect also increases slightly during the dry season,and decreases significantly at the end of the flooding period,while interactions between the two to some extent influence the development of droughts and floods within the lake area.Data show that when the flow of the five rivers within this area is significant and a blocking effect due to the Yangtze River is also clearly apparent,floods occur easily;in contrast,when the opposite is true and the flow of the five rivers is small,and the Yangtze River can accommodate the flow,droughts occur frequently.Construction and enclosure of the TGR also means that the lake area is prone to droughts during September and October.