【摘要】 使用差异显著性分析和作图比较的方法,研究了降水、风和地形等对浑善达克沙地土壤机械组成的影响,结果发现降水对沙地表层0～5cm与5～20cm土层间不同粒径的土粒含量没有显著影响;风对浑善达克沙地0～5cm土层的0.05～0.25mm土粒的含量影响显著,即沿风向0.05～0.25mm土粒在0～5cm土层中的含量有增加的趋势,而迎风坡与背风坡的0～5cm土层中0.005～0.01mm和<0.01mm土粒的含量存在显著性差异,说明风和小地形因素与土壤粒径含量有密切联系.更多还原

【Abstract】 The precipitation, wind and topography have different influences on the soil texture in hunshandake sandland. The correlation between these climate factors and soil texture were studied by the methods of differential analyses and graphic comparison.The influence of precipitation on the soil texture in different layers was not obvious,the soil textures in two different layers (0～5cm, 5～20cm) were similar.The influence of wind on the contents of soil granules with diameters of 0.05～0.25mm in 0～5cm layers was obvious, the contents of granules (diameters 0.05～0.25 mm) increased along the wind direction. The contents of soil granules with diameters 0.005～0.01mm and smaller than 0.01mm in 0～5cm layers were greatly different between the upwind slope and the downwind slope.It was shown that soil texture had a high correlation with wind and microtopography.更多还原