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为探讨落叶松人工林土壤因子的变化规律，采用标准地取样，室内常规分析的方法，测定了不同林龄的落叶松人工纯林、阔叶林、原始红松林下土壤的理化性质。研究结果表明：落叶松人工林下土壤密度增大，孔隙度减少，毛管持水量明显增高，通气性能减弱；随着林龄的增大，土壤有机质含量降低，养分含量下降；土壤质地和土壤酸度变化不显著；但阳离子代换量变低，土壤保肥、供肥能力相对减弱，落叶松人工林的潜在地力呈现衰退趋势
In order to investigate the variation of soil factors in Larix gmelinii plantations, the physical and chemical properties of soil under Larix principis-rupprechtii plantations, broad-leaved forests and primitive Korean pine forests were measured by standard sampling and routine laboratory analysis. The results showed that under the larch plantations, the soil density increased, the porosity decreased, the capillary water holding capacity increased significantly, and the aeration performance weakened. With the increasing of age, the soil organic matter content decreased and the nutrient content decreased. The soil texture and soil acidity But the changes were not significant. However, the amount of cation substitution became lower, soil fertility and fertilizer supply capacity weakened, and the potential fertility of Larix gmelinii plantation showed a declining trend