Soil grain composition, soil carbon and soil nitrogen were identified as the most important factors in shaping nematode communities.
土壤颗粒组成、碳含量和氮含量是影响线虫群落结构的主要环境因子。
The result shows that owing to the effects of the grain and mineral composition et al. , the characteristics of foundation filled with tailings possesses the specialty other than that of natural soil.
试验结果表明，由于尾矿料颗粒组成、矿物成分等因素的影响，用尾矿料充填的地基土层具有不同于天然地基的少黏性土层的特殊性。
The authors also try to improve grain composition of soil by replacing cement soil with some sand to reduce influence of environmental change to strength of cement improved soil.
本文还通过在改良土中置换一定比例的砂土来改善土料的颗粒级配，以降低循环失水对水泥土强度的影响。
In sum, using laser grain-size analysis in studying soil mechanical composition was feasible.
总之，运用激光粒度分析土壤机械组成是可行的。
The results showed that permeability of soil in karst area was effected by the soil structure, grain size composition, mineral composition and plant root.
研究结果表明，喀斯特地区土体渗透系数受土体结构、粒度成分、矿物成分以及植物根系影响。
The results showed that permeability of soil in karst area was effected by the soil structure, grain size composition, mineral composition and plant root.
研究结果表明，喀斯特地区土体渗透系数受土体结构、粒度成分、矿物成分以及植物根系影响。
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