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以安塞大南沟为例首次在流域范围内对几项土壤表面特性进行连续定位测定,初步研究了其时空动态变化规律。结果表明,大南沟流域内土壤随机糙度、抗剪力和团粒稳定性具有一定的空间变化规律,不同土地利用方式间有显著差异。不同地貌类型农耕地土壤随机糙度、抗剪力无明显差异,而团粒稳定性则差异显著。年内各测定周期间土壤随机糙度、抗剪力和团粒稳定性随时间变异不显著。
In the case of Da Nangou, Ansai, for the first time, several soil surface characteristics were continuously located and measured in the watershed. The temporal and spatial dynamics of the soil surface were studied. The results showed that the random roughness, shear strength and pellet stability of the soil in the Dainanangou watershed had some spatial variations, and there were significant differences among different land use types. There was no significant difference in random roughness and shearing strength between the different types of cultivated soils, while the stability of the aggregates was significantly different. During the year, soil random roughness, shear strength and aggregate stability were not significantly different with time.