Mechanism of Riverway Evolvement and Effect at the Estuary of the Weihe River to the Yellow River

摘要：

Riverway evolvement at the estuary of the Weihe River to the Yellow River has changed markedly since 1970s. The Yellow River has swung towards the west about 5km and there is retrogressive deposition along the Weihe River. The mechanism and effect of riverway evolvement at the entrance of the Weihe River to the Yellow River was analyzed with the survey data, historical statistic data and Landsat TM imagines of 1989 and 2000. It can be concluded: (1) Physiognomy factors at the entrance, irrigation works project and integrated environment evolvement in the Weihe River area are the main factors for riverway evolvement at the entrance of the Weihe River to the Yellow River. (2) The riverway evolvement not only results in shrinking of the riverbed at the lower reaches of Weihe River, but also reducing the ability of flood transflux. (3) As the given result, the district regionalism and local protection must be broken to implement the integrated program of the watershed and to decline the Tongguan stage to stabilize the physiognomy at the estuary of the Weihe River to the Yellow River.

关键词： Estuary Riverway evolvement Retrog-ressive deposition Flood

作者: LI Jingyi YANG Wuxue LIU Xilan

作者单位: Key Laboratory of Disaster Survey & Mechanism Simulation of Shaanxi Province e Baoji University of Arts & Sciences, Baoji, 721007, Shaanxi, P.R. China Key Laboratory of Western Chinas Environmental Systems Lanzhou University, Ministry of Education, Lan

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）