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本文用威布尔（Ｗｅｉｂｕｌ）分布拟合白龙江冷杉异龄林的直径分布取得了较好的效果，信度Ｐ＞００５，这为预估该类林分中各径阶的株数，制定合理的经营措施提供了理论依据
In this paper, weibul distribution distribution of Bailong fir different diameter distribution obtained good results, the reliability P> 0 05, which is to estimate the type of forest in this order the number of strains, to develop a reasonable The business measures provide a theoretical basis