The Wind-Sand Flux Structure of Grassland on the Northern Foot of Yinshan Mountain

Abstract:

Sand samplers were layed out in the grassland located in the northern foot of Yinshan Mountain for collecting soil flux samples from 0 to 1.5m height above the surface from Mar., 1, 2008 to Feb., 29, 2009.Exponential and Power functions were both used for describing vertical distribution of sand flux in the grassland, the results indicated that determination coefficient of Power function varied from 0.898 to 0.992 while 0.432 to 0.661 for exponential function. Power function is better than exponential function in describing the vertical distribution of both annual and seasonal soil flux, summer excluded. Annual cumulative percentage of each height was determined indirectly according to the power function mentioned above, the result indicated that up to 2m height,15-25% of soil flux concentrated with in 10cm above the surface,25-35% of soil flux concentrated within 20cm above the surface,30-40% of soil flux concentrated within 30 cm above the surface, 43-54% of soil flux concentrated within 50 cm above the surface,85-90% of soil flux concentrated within 150 cm above the surface, respectively. No significant differences of soil flux structures in spring, autumn, winter and in the whole year were found. The research on wind erosion of grassland in the vertical direction more dispersed, in the height range of sediment accumulated percentage was lower than that of the previous research.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 1530-1537
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.1530
• Online since: October 2014
• Authors: Hong Tao Jiang*, Chun Rong Guo, Chun Xing Hai, Shan Shan Sun, Yun Hu Xie, Jun Xiu Liu
• Keywords: Northern Foot of Yinshan Mountain, Sand Samplers, Wind-Sand Flux Structure

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