安徽省河流泥沙时空分布变化特性研究
Studty on spatio-iemporal distribution characteristics of river sediment in Anhui Province
沈捷 1李淑会2
作者信息
- 1. 安徽省合肥水文水资源局,安徽合肥 230041
- 2. 安徽省水文局,安徽合肥 230022
- 折叠
摘要
对省内5个地貌区的泥沙时空分布规律进行分析研究.结果表明:皖北平原区的主要输沙分布在淮河干流,并且淮河干流的含沙量和输沙量从上游到下游呈逐渐递增趋势;江淮丘陵区沙量一般;皖西山区含沙量和输沙模数都是最大的;沿江平原区含沙量不大,但由于径流量大,输沙量也很大;皖南山区植被良好,森林覆盖率高,含沙量和输沙模数是最小的;总体特点是年际变化大,沙量呈明显的减少趋势;年内分布主要集中在汛期.
Abstract
The spatio-temporal distribution patterns of sediment in five geomorphic areas within the province are analyzed.The results show that the main sediment transport in the plain area of northern Anhui is distributed in the main stream of the Huai River,and the sediment concentration and transport in the main stream of the Huai River show a gradually increasing trend from upstream to downstream;the sand content in the Jianghuai hilly area is average;the sediment concentration and sediment transport modulus are the highest in the moun-tainous area of western Anhui;the sediment content in the plain area along the river is not high,but due to the large runoff,the sediment transport is large;the mountainous areas in southern Anhui have good vegetation,high forest coverage,and the minimum sediment concentration and sediment transport modulus;the overall characteristic is significant interannual variation and a significant decrease in sediment volume;the distribution within the year is mainly concentrated during the flood season.
关键词
空间分布/时间分布/含沙量/输沙量/输沙模数/演变分析Key words
spatial distribution/time distribution/sand content/sediment transport capacity/sediment trans-port modulus/evolutionary analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据