基于卫星遥感技术的赣江尾闾河势演变分析

发布时间：2018-03-22 18:08

本文选题：卫星遥感　切入点：赣江尾闾　出处：《水利水电技术》2017年07期 　论文类型：期刊论文

【摘要】：赣江尾闾地区是包括南昌市在内的江西省经济发展的核心区域,赣江作为江西省内第一大河,其尾闾地区河势变化对其周边地区的经济、防洪、环境等有着巨大的影响。运用卫星遥感技术,对1991—2010年赣江尾闾地区赣江的河道进行了河势演变的研究分析,得出了以下结论:(1)研究区域水域面积1991年约为121 km~2、2001年约为111 km~2、2010年约为132 km~2,经历了先减小后增加的变化过程。(2)历年来尾闾地区的变化主要集中在赣江主干、西支、北支,主干变化最为显著,而南支相对最为稳定。(3)主干的变化主要表现为河道扩张、江心洲面积大幅减小或者消失,其中在南昌市附近河道变化最为明显。推测这些变化主要是由人为影响包括有关工程建设、河砂开采等引起。(4)西支变化较为复杂,其上游段主要表现为河道展宽、水域面积变大,而下游段河道有所束窄;北支历年来均表现为河道束窄、江心洲面积明显增大;中支有所变化,但并不明显。
[Abstract]:The end of the Ganjiang River is the core area of economic development in Jiangxi Province, including Nanchang City. As the largest river in Jiangxi Province, the river regime changes in the region of the end of the Ganjiang River affect the economy and flood control of the surrounding areas. Using satellite remote sensing technology, the river regime evolution of Ganjiang River in the end of Ganjiang River from 1991 to 2010 was studied and analyzed. The following conclusions are drawn: (1) the water area of the study area is about 121 km / m ~ 2 in 1991, 111 km / m ~ 2 in 2001 and 132 km / m ~ (2) in 2010, which has experienced a process of first decreasing and then increasing.) over the years, the changes in the end region are mainly concentrated in the main trunk of Ganjiang River, the western branch and the northern branch. The change of trunk is the most significant, while the main trunk of the southern branch is relatively stable. The change of trunk is mainly shown by river channel expansion, and the area of Jiangxinzhou decreases or disappears significantly. The variation of channel near Nanchang is the most obvious. It is assumed that these changes are mainly caused by man-made influence, such as engineering construction, sand mining, etc.) the changes of the western branch are more complicated, and the upper reaches of the channel are mainly shown as the widening of the channel. The area of the water area became larger, while the lower reaches of the channel became narrow; the northern branch showed narrow channel bundle over the years, and the area of Jiangxinzhou increased obviously; the middle branch changed somewhat, but it was not obvious.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;
【分类号】：P237;TV147

【相似文献】