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本文依35块标准地、795株优势木与亚优势木的调查材料为依据，通过胸径与冠幅相关关系的分析，编制了华北落叶松人工林合理经营密度表。确定以0．6、0．7、0．8为合理经营密度指数。将其作为定量间伐的计量标准，为指导营林生产提供了科学依据。
Based on the survey data of 35 standard and 795 dominance and subdominant woods, the reasonable management density table of Larix principis-rupprechtii plantation was compiled based on the analysis of the correlation between DBH and crown width. To 0.6,0.7,0.8 to a reasonable operating density index. As a measure of quantitative thinning, it provides a scientific basis for guiding the production of silviculture.