泥沙研究2019，Vol.44Issue(2)：41-47,7.DOI:10.16239/j.cnki.0468-155x.2019.02.006
黄河主要产沙区雨沙关系及泥沙变化特征
Relationship between sediment and rainfall and sediment variation in the main sediment yield area of the Yellow River
摘要
Abstract
Region choice, base period decision and rainfall factor optimization of sediment-rainfall relationship in the middle reaches of the Yellow River were studied. Hekouzheng-Longmen area and upper-middle reach of Beiluo River and Jin Riber were taken as the main sediment yield area. The base period was 1959-1969, and 21 rainfall factors were selected. Sediment-rainfall relationship and its main impact factors (density of rainfall stations, calculation method of area rainfall amount, tackle of special points, etc.) were analyzed. Considering the correlation degree of rainfall factors, sediment yield and the availability of rainfall data, the rainfall amount of July and August were selected to establish the sediment-rainfall relationship, which was used to evaluate the reason on sediment quantity changes. The influence degree of rainfall on sediment change was decreased from 85.3％ in 1959-1979, to 23.2％ in 2000-2015, while the influence degree of human activities was increased from 14.7％ in 1957-1979 to 76.8％. It indicted that the effect of human activities on sediment decrease was enhanced obviously with the large scale implementation of "GFG" project in hill slope and check dam construction in gully since the late 90's in 20 century.关键词
雨沙关系/泥沙变化/降雨因素/人为因素/主要产沙区Key words
sediment-rainfall relationship/sediment change/rainfall factor/human activity/main sediment yield area分类
农业科技引用本文复制引用
王万忠,焦菊英,魏艳红..黄河主要产沙区雨沙关系及泥沙变化特征[J].泥沙研究,2019,44(2):41-47,7.基金项目
国家重点研发计划项目(2016YFC0501604) （2016YFC0501604）
国家自然科学基金面上项目(41771319) （41771319）
