The effects between runoff duration and factors of forestland, farmland and bareland, such as slope, rain intensity, initial water content of soil, vegetation cover degree and forest litter thickness were studied in the paper, using a set of small field artificial simulated rainfall device. The results showed that the main factors affecting runoff duration were rain intensity and vegetation cover degree in the forestland, rain intensity, slope and initial water content of soil in the farmland and bareland. ...
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