论文以贡水流域为研究对象,结合流域内2010-2013年的16个气象站日降水资料和7个水文站逐日径流及输沙数据,运用统计分析法、Mann-Kendall 检验等方法分析了贡水流域的输沙时空变化以及对降水变化的响应.主要结论有:①贡水流域年内降水分布不均,在空间上为区域性降水;②贡水流域径流以峡山站贡献最大(占贡水流域的59 %),流域径流年内变化显著;③贡水流域内泥沙以贡水主河道贡献最多,占贡水流域总输沙量的74 %,年内泥沙分布不均;④月输沙量与月降水量间关系式为Q=351+2.1P+0.008P2+3.87*10-7P3; ⑤月均输沙率与月均径流量关系式为Q=-2.771+0.007R+0.0003R2-7.35*10-8R3;⑥降水是影响输沙的主要因素,而径流是影响输沙的直接因素.%Taking the Gongshui River basin as the research object,combined with the daily precipitation data of 16 weather stations and the runoff and sediment transport data of 7 hydrological sites from 2010 to 2013,the spatial and temporal changes of sediment transport and the response to precipitation change were analyzed statistically by using statistical analysis and Mann-Kendall method.The results are as follows:①The distribution of precipitation in Gongshui River is uneven in space,and it is regional precipitation. ②The runoff of the Xiashan section has the largest contribution (59 % of the Gongshui River)and the change of the runoff is the most remarkable during the year. ③The sediment contribution of the main stem in Gongshui River is the largest,about 74 % of the total,and the distribution of sediment during the year is uneven; ④The relationship between monthly sediment load and monthly precipitation is Q=351+2.1P+0.008P2+3.87*10-7P3; ⑤ The relationship between monthly mean sediment transport rate and monthly mean runoff is Q=-2.77+0.007R+0.0003R2-7.35*10-8R3. ⑥ Precipitation is the main factor affecting sediment transport while runoff is the direct factor.
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