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以汾河上游阳坡小流域裸坡地径流小区为研究对象,进行天然降雨条件下裸露坡地的产流产沙研究。结果表明,阳坡小流域2013年降雨年内分布和年际变化明显异于多年平均;2013年内17次侵蚀性降雨产生的累积径流量与累积降雨量、累积产沙量之间相关性较强,相关系数分别达到0.953 4,0.925 9;同时分析表明,年内少数几次雨强较大的侵蚀性降雨对坡地产流量和产沙量贡献率较大。
Runoff and sediment yield from bare slope land under natural rainfall conditions was studied in runoff plot of bare slope in Yangpo watershed upstream Fen River. The results show that the annual distribution and interannual variation of precipitation during the year of 2013 in Yangpo watershed are significantly different from those of the multi-year average. In 2013, the cumulative runoff caused by 17 erosive rainfalls is strongly correlated with cumulative rainfall and accumulated sediment yield, The correlation coefficients reached 0.953 4 and 0. 925 9, respectively. Simultaneously, it was found that a few rainfall-intensive rainfalls during the year contributed a lot to the runoff and sediment yield.