At the initial stages of restoration, improvement on the soil biological properties by lichen and moss were represented mainly on surface layer soil.
在恢复初期，地衣和苔藓对土壤生物学性质的改善主要体现在土壤表层。
The influence of disc dimension parameters, velocity, soil properties, tool surface properties on the disc coulter force were analysed by comparison with the experimental results.
结合试验研究结果，分析了圆盘参数、工作速度、土壤特性和表面材料等对圆盘受力的影响规律。
Results show that response at surface points of the alluvial soil deposit are amplified significantly for given conditions of shape, dimension and material properties of the soil and the canyon.
计算结果表明：在给定河谷形态、尺寸和材料性质条件下，沉积层表面各点的响应显著放大。
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