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Journal of Applied Sciences
  Year: 2014 | Volume: 14 | Issue: 18 | Page No.: 2073-2078
DOI: 10.3923/jas.2014.2073.2078
 
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Research of Relationships between Initial Moisture Content of Sand Soil and its Nutrient Loss in Hulun Lake Basin

Li Weiping, Han Peijiang, Yu Linghong, Shi Yiran, Duan Haojie and Yang Peifeng

Abstract:
In the study, in order to make the study of influences of different early stage water content of the soil on the runoff and the concentration of the solute and migration, in the Hulun Lake, we adopt the traditional artificial rainfall method in the Grazing pasture; in the experiment the rain capacity is set as 87.34 mm h-1. The results show when initial moisture content grassland sand soil is larger; the runoff moments is earlier and runoff coefficient is larger, that is the more rainfall is put into net flows, erosion intensity runoff is more serious. The soil erosion and early water content present approximate parabola relationships. Runoff changes of phosphorus and potassium in the grassland soil is similar to the change of water runoff and there exists a “turning point”, before the turning point, the solute loss is decreasing, after turning point, phosphorus and potassium loss will be increased gradually. This because there exists rill erosion in the turning point, rill erosion on the surface of the slope increases loss of phosphorus and potassium, so the soil erosion is the important reason for the huge loss of nutrients. The research can provide the reference for rational utilization of Lake Basin in pasture and water environmental protection and the management of non-point source pollution.
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How to cite this article:

Li Weiping, Han Peijiang, Yu Linghong, Shi Yiran, Duan Haojie and Yang Peifeng, 2014. Research of Relationships between Initial Moisture Content of Sand Soil and its Nutrient Loss in Hulun Lake Basin. Journal of Applied Sciences, 14: 2073-2078.

DOI: 10.3923/jas.2014.2073.2078

URL: https://scialert.net/abstract/?doi=jas.2014.2073.2078

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