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根据生长势将油松、侧柏的幼树划分成5种类型,以幼林中健壮幼树的百分比来评价林分的质量。测定林分生长量、土壤水分—物理性质和氮、磷、有机质含量。结果表明:侧柏幼林的质量和生长量均大于油松幼林,苗龄及育苗方式对幼林质量的影响不大。侧柏林地土壤的水分—物理性质优于油松林地。油松、侧柏的生长速度强烈地影响着林地土壤肥力状况,土壤肥力的高低与林木的生长速率呈反比。
According to the growth potential of the Pinus tabulaeformis, Platycladus orientalis saplings are divided into five types, young trees in the sturdy young trees to assess the quality of the forest. The growth of stands, soil water - physical properties and nitrogen, phosphorus and organic matter contents were measured. The results showed that the quality and growth of young Platycladus orientalis were higher than that of young Pinus tabulaeformis seedlings, and the seedling age and seedling raising methods had little effect on the quality of young forest. The water - physical properties of the soil in the sidebrow woodland is better than that of the pine woodland. The growth rate of Pinus tabulaeformis and Platycladus orientalis strongly influenced soil fertility in forestland, and the soil fertility was inversely proportional to the growth rate of forest.