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文章分析了原始阔叶红松林和次生杂木林采伐后，人工更新红松、落叶松、天然更新白桦林和撩荒对土壤磷含量的影响，以及落叶松二代林中土壤磷素的变化。其方法是选择不同林龄阶段的落叶松人工林及相邻的红松人工林、天然白桦林和杂木林进行对比研究。研究结果表明，落叶松人工林下土壤磷的含量大于红松人工林和天然白桦林；撩荒的采伐迹地磷的含量显著小于有林地；二代林中土壤磷含量与一代林无显著差异。同时，从速效磷的水平来看，落叶松人工林下土壤的酸度状况并不影响其效果。
In this paper, the effects of artificial regeneration of Korean pine, larch, natural regeneration birch and retiring on soil phosphorus after the cutting of the primary broad-leaved Korean pine and secondary mixed forest, and the changes of soil phosphorus in the secondary forest of larch . The method is to choose the larch plantations of different age stages and the adjacent Korean pine plantations, natural birch and mixed wood for comparative study. The results showed that the content of soil phosphorus in Larix gmelinii plantation was greater than that in the Korean pine plantation and natural birch forest. The content of phosphorus in the cuttings was significantly smaller than that in the forestland. The phosphorus content in the second generation forest was not significantly different from that in the generation forest. At the same time, from the level of available phosphorus, the acidity of soil under the larch plantation does not affect its effect.