摘要
基于遥感技术，收集了1973-2009年间鄱阳湖区域枯水期有代表性的遥感影像，通过定量和矢量图叠加方法，提取了鄱阳湖流域赣、抚、信、饶、修五大河流尾闾的河道平面形态特征。依据河道岸线的变化特征，分析了40 a来鄱阳湖五河尾闾的演变规律。在分析五河尾闾演变规律的基础上，对引起河流形态变化的主要影响因素进行了探讨。结果认为：修建堤防、河道采砂、航道疏浚、水利工程建设、水土流失等人为活动对河道尾闾影响较大。研究成果可以为未来河势控制、河道整治及岸线开发决策提供依据。
Based on remote sensing technology, the representative remote sensing images of Poyang Lake in dry season from 1973 to 2009 were collected and the estuarine flat morphological characteristics of the tails of Ganjiang River, Fuhe River, Xin-jiang River, Raohe River, Xiuhe River of Poyang Lake were extracted through quantitative and vector superposition method. Ac-cording to the evolution characteristics of shoreline of the 5 rivers, the evolution laws of the tails in recent 40 years were analyzed and the main factors causing the variation of river morphology were discussed. The study shows that human activities such as em-bankment construction, river sand mining, river channel dredging, water project construction, soil erosion play a major role in the evolution of the river tails and estuaries. The study results provide a decision making basis for the river regime control, river channel regulation and shoreline development in future.
出处
《人民长江》
北大核心
2014年第4期27-31,共5页
Yangtze River
基金
水利部公益性行业科研专项经费项目(201101041)
关键词
遥感监测
河道尾闾
岸线
河道演变
鄱阳湖
remote sensing
tail channel
shoreline
river channel evolution
Poyang Lake
