摘要
通过对黄河流域150个颗粒分析站点2400多个站年资料的改正和插补,在保证资料的一致性和可比性前提下,分析编绘了黄河流域三种粒级的粗沙模数分布图。并分析论证了黄河流域粗沙来源、分布范围及产沙量,得出黄河流域的粗沙主要来源于河口镇—龙门区间以及泾、洛、渭、(氵状)头四河中上游,约有80％的粗沙集中来自10~5km^2的范围内,且粒径越粗,分布越集中。同时,通过流域面上粗沙产量与龙门、华县、河津、(氵状)头四站实测粗沙量的对比分析,提出了采用区域计算成果评估黄河流域粗沙的新方法。
In this paper, the data of the particle size analysis and sediment runoff, from about 2400 station-years at150 stations of the Yellow River, have been corrected and interploted according to the principle of consistency and comparability. Based on these data, three distribution maps of the sediment runoff moudles for the coarse sands with the particle diameters have been compiled. From these three maps, the distribution, source and sediment runoff of the coarse sands on the Yellow River have been analyzed and identified. The coarse sand runoff on the Yellow River mainly comes from the region from Hekouzhen to longmen, from the regions of Jinghe River and Luohe River, and from the upper middle regions of Weihe River and of Fenhe River. The source of about 80％ of the total coarse sand runoff mainly focus on an area of 100 000km^2, and the greater the particle is, the more centralizing the distribution of the coarse sand is. Through a comparative study of the coarse sand runoff on these area and the measured one at the stations of Longmen, Huaxian, Hejin and Zhuangtou, a new method using calculated result to evaluate the coarse sand runoff on the Yellow River basin has been put forward.
出处
《水土保持学报》
CSCD
北大核心
1992年第2期7-11,共5页
Journal of Soil and Water Conservation
关键词
粗沙来源
颗粒
输沙量
泥沙
source of coarse sand coarse sand particle size analysis sediment runoff contrast analysis
