Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River

Wang Ruyan; Zhao Long; Song Qingjian; Zhao Chenrui; Zhao Jinghui; Zheng Zhiguo; Zhang Rong

doi:10.13961/j.cnki.stbctb.2024.06.021

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Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River

- Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River
- Bulletin of Soiland Water Conservation Vol. 44, Issue 6, Pages: 194-199(2024)
- 作者机构：
  
  1. 泰安市水文中心,山东,泰安,271018
  2. 山东农业大学水利土木工程学院,山东,泰安,271018
  3. 聊城市水利工程总公司,山东,聊城,252000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.06.021
  CLC： S157;TV121
- Published：2024
- 稿件说明：
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Wang Ruyan, Zhao Long, Song Qingjian, et al. Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 194-199.
DOI：

Wang Ruyan, Zhao Long, Song Qingjian, et al. Rainfall Regimes and Their Influence on Runoff and Sediment Yield at Small Watershed in Upper Reaches of Dawen River[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 194-199. DOI： 10.13961/j.cnki.stbctb.2024.06.021.

摘要

[目的] 研究大汶河上游小流域降雨类型及其对产流产沙的影响，为鲁中南山地丘陵区防洪减灾与水土流失的预测预警提供理论依据。[方法] 以大汶河上游徂徕山小流域为研究区，基于2021—2023年小流域降雨数据及产流产沙数据，采用K均值聚类、线性回归分析等统计分析方法，研究了流域降雨雨型及其对产流产沙的影响。[结果] 流域降雨可分为4种类型：Ⅰ类为小雨量小雨强降雨；Ⅱ类为中雨量中雨强降雨；Ⅲ类为大雨量大雨强降雨；Ⅳ类为超大雨量中雨强降雨。Ⅲ类降雨与Ⅳ类降雨为该流域产流产沙的主要来源。[结论] 徂徕山流域以小雨量小雨强降雨为主，但暴雨频次仍然较高。受山区地形影响，Ⅳ类降雨是区域洪灾和泥石流的重要来源；降雨量是该流域产流产沙的主要影响因素。

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.

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references

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