Underground Runoff Product Flow of Red Loam under Rainfall Simulation

Abstract:

The red loam had abundant rainfall, rich in light and heat resource of Yunnan Province. But the uneven distribution of rainfall temporal during the year, it restricts the development of agriculture in this region. Thus how to use soil water resources reasonably and efficiency become the key to ensure crop and vegetation growth of needed water and improve the ecological environment. In this study, the key factor is district’s slope. Setting the runoff district’s rainfall intensity was 28.7mm/24h under rainfall simulation, selected four Yunnan Province read loam’ slop: 7.5°、10°、12.5°、15°.The results showed that at the same soil prophase water content and rainfall intensity, the higher runoff district’s slope will make it less time to product flow; At the beginning of product flow, flow of underground runoff was little, product flow was reached stable increase.

• Periodical: Applied Mechanics and Materials (Volume 737)
• Pages: 766-770
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.737.766
• Online since: March 2015
• Authors: Chuang Li, Yan Wei Liu, Na Fu, Rui Tao Fang
• Keywords: Rainfall Intensity, Rainfall Regular Pattern, Rainfall Simulation, Red Loam, Slope

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