首页 | 官方网站   微博 | 高级检索  
     

水土保持对黄河中游泥沙粒径影响的统计分析
引用本文:韩鹏,倪晋仁.水土保持对黄河中游泥沙粒径影响的统计分析[J].水利学报,2001,32(8):0069-0075.
作者姓名:韩鹏  倪晋仁
作者单位:1. 北京大学环境中心
2. 清华大学水利系
基金项目:国家自然科学基金委员会和水利部联合资助项目(59890200).
摘    要:利用黄河中游河口 龙门区间干支流水文站近30年的实测资料,采用方差分析及Wilcoxon加符秩检验两种统计方法,分别对河口 龙门区间以及各水文站控制区间泥沙级配在水保前后的变化进行了分析。结果表明,对于单个水文站,只有当流域水保程度较高时,泥沙粒径才表现出明显变细的统计趋势;从整个河口 龙门区间来看,长时段平均的结果表明河流泥沙粒径有明显细化的统计趋势,这一趋势主要与流域上大规模的水土保持活动有关。文中还分析了不同地貌单元水土保持对泥沙粒径的影响。

关 键 词:水土保持  黄河中游  泥沙粒径  统计
文章编号:0559-9350(2001)08-0069-06
修稿时间:2000年8月1日

Grain size variation of suspended sediment due to soil conservationin the middle reach of Yellow River
HAN Peng,NI Jin ren.Grain size variation of suspended sediment due to soil conservationin the middle reach of Yellow River[J].Journal of Hydraulic Engineering,2001,32(8):0069-0075.
Authors:HAN Peng  NI Jin ren
Affiliation:1.Tsinghua University; 2.Peking University
Abstract:Grain size variation of suspended sediment before and aftersoil conservation at some hydrologic stations and in the whole study area are analyzed with statistical method and Wilcoxon signed rank test method respectively. The statistical result of hydrologic stations shows that the sediment becomesmore fine when the soil conservation was implemented and reaches very high level. The long term variation of the grain size within the catchment also reveals atrend of becoming more fine, Which is resulted from the effect of large scaleactivity of soil conservation. Furthermore, qualitative analysis of the geomorphologic effect on grain size is investigated.
Keywords:water and soil conservation  middle reach of Yellow River  suspended sediment  composition statistical method
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《水利学报》浏览原始摘要信息
点击此处可从《水利学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号