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  1. Copilot 答案
    地表径流又称表面径流,或作迳流,是指雨水或是冰雪融化后,排除蒸发、渗透、吸收、受阻的水,而沿着地面流动所产生的水流。 表面径流可能是因为土壤已经吸饱水,无法再吸收水分,或者是一些不透水的表面使水流到周围的土壤。地表径流是水循环中重要的一部分,也是造成水土流失的主要原因之一。 还没进入水道之前的表面径流也称为非点源。若非点源中含有人造污染物或是天然污染物,则称为非点源污染。若一个区域的径流会汇流到某一点,此区域称为流域。当径流流过地面时,会带走土壤中石油、杀虫剂或是肥料等土壤污染物,形成非点源污染。
    Generation

    Surface runoff is defined as precipitation (rain, snow, sleet, or hail ) that reaches a surface stream without ever passing below the soil surface. It is distinct from direct runoff, which is runoff that reaches surface streams immedi… 展开

    Human influence

    Urbanization increases surface runoff by creating more impervious surfaces such as pavement and buildings that do not allow percolation of the water down through the soil to the aquifer. It is instead forced directly into strea… 展开

    Effects of surface runoff

    Surface runoff can cause erosion of the Earth's surface; eroded material may be deposited a considerable distance away. There are four main types of soil erosion by water: splash erosion, sheet erosion, rill erosion and … 展开

    Mitigation and treatment

    Mitigation of adverse impacts of runoff can take several forms:
    Land use development controls aimed at minimizing impervious surfaces in urban areas
    Erosion controls for farms and construction展开

     
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