摘要：Soil aggregate property, as a widely accepted soil quality indicator, is closely related to the erosion resistance of soil. In order to quantitatively assess the erosion resistance of vegetation concrete, a typical artificial composite soil, the distribution characteristics of aggregate particle size and eleven evaluation indexes were determined and calculated in laboratory by contrast with natural soil under the same site conditions. The research conclusions could be presented as follows: Compared with the natural soil, mechanical stability macroaggregate, water-stable macroaggregate, mean weight diameter, geometric mean diameter and organic matter content increased by 9.1% , 97.0%, 123.6%, 158.6% and 65.2% respectively. In contrast, erodibility factor, structural failure rate, fractal dimension and dispersion rate decreased by 75.8%, 38.1%, 24.4% and 27.2% respectively. Besides, aggregation status and aggregation degree improved by 63.9% and 38.5%, and the comprehensive principal component value of erosion resistance also increased by 252.6%. Due to the addition of natural organic material and cement, the erosion resistance of vegetation concrete was greatly superior to that of natural soil. Therefore, vegetation concrete was a suitable composite soil to create vegetation habitat on the surface of bare rock slope.
