松辽流域主要河流水沙规律分析

Analysis of runoff and sediment laws in main rivers for Songliao river basin

本文基于统计理论的概念,从建立泥沙频率分布曲线入手,分析了松辽流域主要河流(松花江、辽河)水沙频率之间的关系。定量界定了水沙丰平枯组合类型,将年径流量和输沙量分别划分为丰、平、枯(大、中、少)3个等级,以频率作为实测年径流量和输沙量丰、平、枯(大、中、少)划分的标准,结合泥沙频率研究成果,对松辽流域主要河流的水沙分布规律进行了探讨,为进一步研究松辽流域人为活动对河流泥沙、水土流失问题的影响创造了条件。

Based on the concept of statistical theory,starting with building curve of frequency distribution for the sediment,the paper analyzes the relationship between runoff and sediment of main stream(Songhua river and Liao river) in Songliao river basin.The paper quantitatively defines wet and normal and dry combination type of runoff and sediment,divides annual runoff and annual sediment runoff into wet and normal and dry three grades,discusses the law of runoff and sediment for main river in Songliao river basin taking the frequency of observe annual runoff and sediment runoff as standard to divide the grades and combining the research result about sediment frequency,provides condition for further study of the influence of human activities on the problem of sediment and soil and water loss in Songliao river basin.