Analysis on the Evolution of Water and Sediment Fluxes into and out of Poyang Lake and the Attribution of Sediment Transport
Based on the annual runoff and sediment transport data from 1956 to 2020 at the"Five Rivers"control station and Hukou station of Poyang Lake,this paper studied the change trend of water and sediment flux into and out of the lake by means of mathematical statistics and"hydrology",and quantitatively analyzed the impact of runoff changes and human activities on the sediment transport into and out of the lake.The results show that:(1)The annual runoff of Xiuhe River increased significantly,the annual sediment discharge of Ganjiang River and Xinjiang River decreased significantly,and the annual sediment discharge of Raohe Hushan Station increased significantly.(2)The change of runoff has a negative contribution to the change of annual sedi-ment discharge of Ganjiang River,Xinjiang River and Xiuhe River,a positive contribution to the change of annual sediment dis-charge of Raohe River,and human activities have a positive contribution to the change of annual sediment discharge of each river.(3)The sediment discharge into the lake and the change of human activities have positive and negative contributions to the sediment discharge out of the lake.
万方数据
维普
