赣江上游典型流域输沙过程及对降水与径流变化的响应--以贡水流域为例  

Temporal and spatial variation of sediment transport in Gongshui River and its response to precipitation

作　　者：赵淑云 苗帅升 刘友存[2] 赵奎[2] 陈飞[2] 胡阳阳 谌模洋 胡孝景 

机构地区：[1]江西理工大学马克思主义学院,江西赣州341000 [2]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《江西理工大学学报》2018年第1期37-43,共7页Journal of Jiangxi University of Science and Technology

基　　金：国家自然科学基金资助项目(41471001,41001006);江西理工大学人才引进基金资助项目(jxxjbs17017);中国国家留学基金委公派访问学者资助项目(20140825)

摘　　要：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+0.008P^2+3.87*10^(-7)P^3;(5)月均输沙率与月均径流量关系式为Q=-2.771+0.007R+0.0003R^2-7.35*10^(-8)R^3;(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：（1） The distribution of precipitation in Gongshui River is uneven in space, and it is regional precipitation.（2） The 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.（3） The 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;（4） The relationship between monthly sediment load and monthly precipitation is Q=351＋2.1 P＋0.008 P^2＋3.87＊10^（-7） P^3;（5） The relationship between monthly mean sediment transport rate and monthly mean runoff is Q=-2.77＋0.007 R＋0.0003 R^2-7.35＊10^（-8） R^3.（6） Precipitation is the main factor affecting sediment transport while runoff is the direct factor.

关 键 词：泥沙输移 径流 降水 线性回归 贡水 

分 类 号：P964[天文地球—自然地理学]