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[1]DAI Wen,WANG Jinfeng,TONG Shuangmei,et al.Variation Process of Water and Sediment Along Jingjiang River and Its Effect on the Dongting Lake over the Past Six Decades[J].Research of Soil and Water Conservation,2017,24(06):255-261.

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Variation Process of Water and Sediment Along Jingjiang River and Its Effect on the Dongting Lake over the Past Six Decades

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 255-261 Column: Public date: 2017-11-24

Title:: Variation Process of Water and Sediment Along Jingjiang River and Its Effect on the Dongting Lake over the Past Six Decades

Author(s):: DAI Wen¹, WANG Jinfeng¹, TONG Shuangmei¹, ZHANG Fuzhu²; 1. College of Tourism, H istorical Culture, Liupanshui Normal University, Liupanshui, Guizhou 553004, China;
2. College of M athem atics and Inform ation Engineering, Liupanshui Normal University, Liupanshui, Guizhou 553004, China

Keywords:: three outlets in Jingjiang River; water and sediment; human activity; influencing factors; Dongting Lake

CLC:: P343.3

DOI:: -

Abstract:: The process change of water and sediment in Jingjiang River is an important part of the development of Dongting Lake, which plays an important role in the stability of Dongting Lake. Based on water and sediment data of three outlets in five stations in the Jingjiang River in the period 1951-2014, the variation process of water and sediment along Jingjiang River and influencing factors of the Jingjiang of Yangtze River were discussed, and the influence of water and sediment change on Dongting Lake was discussed. The results show that the runoff and sediment along Jingjinag River presented the significantly decreasing trend over the past six decades. The reduction of water and sediment resulted in the functional flow of the four stations in the five stations of the three stations, and the number of days of flow obviously increased. The main driving factors influencing the variation of water and sediment in the three outlets in Jingjiang River were the decreasing precipitation of Dongting Lake and the human activity such as hydro-junction projects. The process change of water and sediment in Jingjiang River plays an important role in regulating and restricting the structure of lake basin and the shape of Dongting River. The reduction of water and sediment resulted in the shrinking of the lake area and the reduction of the volume of Dongting Lake, but the life span of Dongting Lake increased. The correct understanding of the change regularity in the three outlets in Jingjiang River and its influence on Dongting Lake can provide theoretical basis and practical experience for the development and utilization of water resources in three districts and the comprehensive management of Dongting Lake.

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