喀斯特黄壤分布区谢家沟小流域侵蚀性降雨与产沙特征分析
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Analysis of Erosion and Sediment Yield Characteristics of the Xiejiagou Small Watershed in the Karst Yellow Soil Distribution Area
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    摘要:

    根据谢家沟小流域 2014—2018年降雨历时、雨强和雨量等数据资料,通过80%频率分析法与统计方法得到研究区侵蚀性降雨的基本雨量标准为13.8 mm,并结合分析该小流域降雨侵蚀力年内和年际变化等特征。研究结果表明,侵蚀性降雨存在年际波动的特征,6月是研究区侵蚀性降雨防治的重点,在大雨及暴雨的侵蚀性降雨事件中,高强型降雨(I30 ≥ 30 mm/h)是土壤产沙的主要动力,研究结果可以为保护生态环境、预测和治理小流域水土流失提供参考依据。

    Abstract:

    Based on the rainfall duration, intensity and rainfall data of Xiejiagou small watershed from 2014 to 2018, the basic rainfall standard for erosive rainfall in the study area was obtained through the 80% frequency analysis method and statistical methods, and the characteristics of erosive rainfall within a year and between years were analyzed. The research results show that erosive rainfall has an inter-annual fluctuation characteristic, and June is the key month for the prevention of erosive rainfall in the study area. In the erosive rainfall events of heavy rain and heavy rain, high-intensity rainfall(I30 ≥ 30 mm/h)is the main driving force for soil erosion. The research results can provide reference basis for protecting ecological environment, predicting and controlling soil and water loss in small watersheds.

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向鸿琳,向娟,杨广斌,谢波.喀斯特黄壤分布区谢家沟小流域侵蚀性降雨与产沙特征分析[J].科技与产业,2025,25(10):128-133

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  • 在线发布日期: 2025-06-06
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