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研究了土壤磁化率与土壤物理性质的关系,结果表明:应用干筛法在不同粒级土团中获得的0.1～0.25mm粒级的土团主导土壤的磁化率,各组分土团中大于0.1mm的组分磁化率与粒径呈反相关,小于0.1mm的组分磁化率与粒径呈正相关。土壤比重、土壤总孔隙度、崩解速率等均与土壤磁化率呈负相关,且土壤崩解速率与土壤磁化率呈极显著负相关;土壤磁化率与容重、粒径小于0.25mm的水稳性团粒组分和大于0.05mm的机械组分含量呈显著正相关。坡面土壤侵蚀导致坡面物质发生再分布,使得土壤颗粒组成、容重、比重、孔隙度等土壤物理性质发生变化,进而使得坡面不同空间部位土壤磁化率出现差异。
The relationship between soil magnetic susceptibility and soil physical properties was studied. The results showed that the magnetic susceptibility of soil dominated by 0.1-0.25 mm soil grading obtained by dry sieving in different size soil groups was larger than The magnetic susceptibility of the 0.1mm component is inversely related to the particle size. The magnetic susceptibility of the component less than 0.1mm is positively correlated with the particle size. Soil specific gravity, total soil porosity, disintegration rate and so on were negatively correlated with soil magnetic susceptibility, and the soil disintegration rate was significantly negatively correlated with soil magnetic susceptibility. Soil magnetic susceptibility and bulk density, particle size less than 0.25mm water stable There was a significant positive correlation between the contents of the components and the content of mechanical components larger than 0.05mm. Slope soil erosion leads to the redistribution of slope material, which changes the soil physical properties such as soil particle composition, bulk density, specific gravity and porosity, which leads to the difference of soil magnetic susceptibility in different spatial parts of slope.