Characteristics of low-water level changes in Lake Poyang during 1952-2011
Characteristics of low-water level changes in Lake Poyang during 1952-2011
复制标题
DOI：
10.18307/2012.0505
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Mingkai Qian
中科院分区：
文献类型：
--
作者：
Mingkai Qian
利用鄱阳湖区1952-2011年水文监测资料，分析了近60 a来鄱阳湖枯水位的变化特征，探讨了鄱阳湖枯水位变化的可能机制，即受流域内降水、流域内五河来水、长江中下游来水的影响，结果表明，近11年来，鄱阳湖流域降水偏少，导致五大河流来水量减少，鄱阳湖低水位状况加剧，特别是近5年来，长江中下游来水对鄱阳湖低水位的控制作用增强，特别是三峡大坝运行后，效果更是明显。
Using the hydrology monitoring data in Lake Poyang area during 1952-2011,the characteristics and variations of low-water level in Lake Poyang in recent 60 years were analyzed.Possible mechanisms for the variations of low-water level changes in Lake Poyang were discussed,i.e.influences from precipitation within the basin,inflows from the five rivers within the catchment,and from the middle and lower reaches of Yangtze River,and lake basin topography.The results showed that the low-water level status was aggravating in the last 11 years,especially in the last 5 years,since the inflows from the five rivers were decreased due to less precipitation in Lake Poyang Basin.Secondly,the control of low-water level in Lake Poyang by inflows from the middle and lower reaches of Yangtze River was strengthened during the past 10 years,especially the effects were enhanced after the operation of the Three-Gorge Dam.