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首页> 外文期刊>Journal of Hydrology >Influence of pebble size and cover on rainfall interception by gravel mulch
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Influence of pebble size and cover on rainfall interception by gravel mulch

机译：卵石尺寸和覆盖度对碎石覆盖物截留降雨的影响

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摘要

Rainfall interception by surface rock fragments may be an important component of the water balance of the stone mulched fields. However, interception loss by rock fragment layer receive only slight attention and field studies under natural rainfall are still scarce. A field study was conducted to investigate the effects of pebble size and cover percentage on interception during naturally occurring rainfall events in the semiarid loess regions of northwest China. The results indicate that pebble size and cover percentage have a different effects on rainfall interception. Interception increased with pebble cover percentage but decreased with pebble size. Interception was 8.9% of the gross rainfall at the 25% cover, followed by 15.7, 21.8 and 29.8% at the 50, 75 and 100% cover, respectively. In the case of pebble size, interception accounted for 36.4% of the gross rainfall for the pebble diameter of 2.5 cm, which is about 1.2, 2.1 and 2.5 times higher than that for the pebble diameters of 5.0, 7.5 and 10.0 cm, respectively. (c) 2005 Elsevier B.V.. All rights reserved.
机译：地表岩石碎片拦截的降雨可能是覆盖石料田中水平衡的重要组成部分。然而，岩石碎屑层的截留损失仅受到很小的关注，在自然降雨下的野外研究仍然很少。进行了一项野外研究，以调查在中国西北半干旱黄土地区自然降雨事件中，卵石尺寸和覆盖率百分比对拦截的影响。结果表明，卵石的大小和覆盖率对降雨截留的影响不同。截距随卵石覆盖率的增加而增加，但随卵石尺寸的减小而减小。截获率为25％时，占总降雨量的8.9％，其后分别为50％，75％和100％时为15.7、21.8和29.8％。就卵石尺寸而言，卵石直径为2.5 cm时，截留量占总降雨量的36.4％，分别比卵石直径5.0、7.5和10.0 cm高约1.2、2.1和2.5倍。 （c）2005 Elsevier B.V.。保留所有权利。

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