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Influence of gravel mulch on rainfall interception under simulated rainfall

机译：模拟降雨条件下碎石覆盖对降雨截留的影响

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摘要

To understand the hydrological outcomes of interception by gravel mulches, rainfall simulation experiments were conducted in the loess regions of northwestern China. The rainfall interception decreased with gravel size but increased with the thickness of the gravel mulch layer, following two exponential functions. Interception was 15.1% of the gross rainfall at 1 cm thickness, followed by 17.2, 20.9, 30.5 and 45.6 % at 3, 5, 7 and 10 cm thickness, respectively. For the equivalent gravel grain size of 3.43 mm, relative interception was 45.6%, which was about 1.1, 1.2, 1.4 and 2.3 times higher than that for the equivalent grain size of 11.01, 19.31, 32.8 and 43.72?mm, respectively.
机译：为了了解砾石覆盖截留的水文结果，在中国西北的黄土地区进行了降雨模拟实验。降雨截留随砾石尺寸的增加而减小，但随砾石覆盖层厚度的增加而增加，遵循两个指数函数。在1厘米厚的地方，截留率为总降雨量的15.1％，然后在3、5、7和10厘米厚处分别为17.2％，20.9、30.5和45.6％。对于3.43 mm的等效砾石粒度，相对截距为45.6％，分别比11.01、19.31、32.8和43.72？mm的等效粒度高1.1倍，1.2倍，1.4倍和2.3倍。

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