水土保持通报2024，Vol.44Issue(6)：194-199,209,7.DOI:10.13961/j.cnki.stbctb.2024.06.021
大汶河上游小流域降雨类型及其对产流产沙的影响
Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River
摘要
Abstract
[Objective]The rainfall regimes and their effects on runoff and sediment yield in the small watershed of the upper reaches of Dawen River were studied,in order to provided a theoretical basis for the predicting and early warning of flood control and soil erosion in the mountainous and hilly areas of Central and Southern Shandong Province.[Methods]The Culai Mountain watershed in the upper reaches of the Dawen River was selected as the study area.K-means clustering and multiple linear regression analysis were employed to examine different types of rainfall and their impacts on sediment yield using rainfall,runoff,and sediment yield data from 2021 to 2023.[Results]The rainfall in this basin can be divided into four types,categorized as follows:type Ⅰ features small amounts of precipitation with low intensity,type Ⅱ features medium amounts of precipitation with moderate intensity,type Ⅲ features heavy amounts of precipitation with high intensity,and type Ⅳ features extra heavy amounts of precipitation with moderate intensity.Rainfall in types Ⅲ and Ⅳ was the main source of runoff and sediment yield in this basin.[Conclusion]The Culai Mountain watershed mainly experiences light rainfall with low intensity,yet the frequency of rainstorms remains relatively high.Affected by the mountainous terrain,the Ⅳ type rainfall was significant sources of regional floods and debris flows.Rainfall Precipitation amount is the primary influencing factor for runoff and sediment production in this basin.关键词
大汶河上游流域/统计分析法/降雨类型/产流产沙量Key words
upper reaches of Dawen River basin/statistical analysis/rainfall types/runoff and sediment yield分类
农业科技引用本文复制引用
王如岩,赵龙,宋庆健,赵辰瑞,赵井辉,郑志国,张荣..大汶河上游小流域降雨类型及其对产流产沙的影响[J].水土保持通报,2024,44(6):194-199,209,7.基金项目
流域水循环模拟与调控国家重点实验室开放研究资助项目"北方丘陵山区下小流域土壤氮磷流失规律及模型模拟研究"(IWHR-SKL-202219) （IWHR-SKL-202219）
教育部产学合作协同育人项目(201902211016 （）
202101284013) （）
水利部专项支撑计划水资源费项目"重要饮用水水源地综合监管方案"(WE0149B052020) （WE0149B052020）
