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通过六株树样圆法,调查青海云杉林样圆281个,六组树木对株心距、冠间距、冠幅半径数据6744个。对其客观分布规律进行统计分析,揭示了样圆与郁闭度的关系,以及林龄与各测树因子之间的结构。上述内容,为更好地经营和研究祁连山水源涵养林提供了理论依据。
By means of six tree sample round methods, 281 samples of Qinghai spruce forest were surveyed. The statistical analysis of its objective distribution rule reveals the relationship between sample circle and canopy density, as well as the relationship between stand age and each tree-determining factor. The above content provides a theoretical basis for the better management and research of water conservation forests in the Qilian Mountains.