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通过对207国道浑善达克沙地高速公路沙袋沙障综合防护效益进行分析,研究表明沙袋沙障的设置使风速降低比增加了18.96%~8.12%,地表粗糙度提高了825~140.6倍,输沙率减少了0.4~0.5 g.cm-2.min-1,有效减弱了近地层风沙话动的强度。同时沙袋沙障的设置显著提高人工植被的成活率和保存率,丰富度和Shannon-Wiener指数明显增大,土壤理化性质有明显的改善。综合分析表明1.0m×1.0m沙袋沙障的防护效果最为显著。
Based on the analysis of the comprehensive protective effect of Sandbag Sand Barrier on Hunshandake Sandy Highway of 207 National Highway, the research shows that the sandbag sand barrier can reduce wind speed by 18.96% -8.12% and surface roughness by 825-140.6 times, The sediment transport rate decreased by 0.4-0.5 g.cm-2.min-1, effectively reducing the intensity of sandstorm in the near-surface layer. At the same time, the setting of sandbag sand barrier significantly improved the survival rate and preservation rate of artificial vegetation, the abundance and Shannon-Wiener index increased obviously, and the soil physical and chemical properties improved obviously. The comprehensive analysis shows that the protective effect of sandbags with 1.0m × 1.0m sandbags is the most significant.