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首页> 外文期刊>Hydrological processes >Precipitation-runoff processes in Shimen hillslope micro-catchment of Taihang Mountain, north China
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Precipitation-runoff processes in Shimen hillslope micro-catchment of Taihang Mountain, north China

机译：在石门Precipitation-runoff过程hillslopemicro-catchment太行山,北中国

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摘要

Precipitation runoff is a critical hillslope hydrological process for downslope streamflow and piedmont/floodplain recharge. Shimen hillslope micro-catchment is strategically located in the central foothill region of Taihang Mountains, where runoff is crucial for water availability in the piedmont corridors and floodplains of north China. This study analyzes precipitation-runoff processes in the Shimen hillslope micro-catchment for 2006–2008 using locally designed runoff collection systems. The study shows that slope length is a critical factor, next only to precipitation, in terms of runoff yield. Regression analysis also shows that runoff is related positively to precipitation, and negatively to slope length. Soil mantle in the study area is generally thin and is therefore not as critical a runoff factor as slope length. The study shows a significant difference between overland and subsurface runoff. However, that between the 0–10 and 10–20 cm subsurfaces is insignificant. Runoff hardly occurs under light rains (<10 mm), but is clearly noticeable under moderate-to-rainstorm events. In the hillslope catchment, vertical infiltration (accounting for 42–84% of the precipitation) dominates runoff processes in subsurface soils and weathered granite gneiss bedrock. A weak lateral flow (at even the soil/bedrock interface) and the generally small runoff suggest strong infiltration loss via deep percolation. This is critical for groundwater recharge in the downslope piedmont corridors and floodplains. This may enhance water availability, ease water shortage, avert further environmental degradation, and reduce the risk of drought/flood in the event of extreme weather conditions in the catchment and the wider north China Plain. Copyright ? 2011 John Wiley & Sons, Ltd.
机译：降水径流hillslope是至关重要的水文过程下坡的河流皮埃蒙特/泛滥平原充电。micro-catchment座落于太行山山麓地区的中部,径流水的可用性是至关重要的在哪里皮埃蒙特走廊和泛滥平原的北部中国流程在石门hillslope micro-catchment2006 - 2008年利用当地径流而设计的收集系统。长度是一个关键因素,仅次于降水、径流的产量。回归分析还表明,径流有关积极降水负斜率的长度。研究区域通常是薄,因此没有径流系数作为边坡长度一样重要。研究表明一个重要的区别地面和地下径流。清廉,10 - 20厘米子表面之间无关紧要的。降雨(< 10毫米),但显然是明显的moderate-to-rainstorm事件。排水、垂直渗透(占42 - 84%的降水)主导决选地下土壤和风化过程花岗片麻岩基石。甚至土壤/基岩界面)和一般小型径流建议强烈通过深层渗透渗透损失。关键的地下水补给下坡的山麓走廊和泛滥平原。这可能提高水资源,缓解水短缺,避免进一步的环境降解,减少干旱和洪水的风险在极端天气条件下的事件排水和更广阔的华北平原。版权?

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