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本文通过对三块0.25公顷标准地的林分调查,反映洮河林区云杉纯林、冷杉纯林及云、冷杉混交林三种不同林分的结构实例,说明本区云、冷杉林属于复层异龄林,一般具有两层和两个世代。株数与径级的分布,是倒J 型递减曲线,但出现不典型的偏左高峰。还分析了其他一些林分结构特点,对于正确认识现实林分,制定科学经营措施,有重要参考价值。
In this paper, three 0.25 hectares of standard site survey of the forest to reflect the pure forest of spruce, fir fir pure forest and fir and fir mixed forest three different types of forest structure example, indicating that the area of cloud, fir forest belong to Stratified anaerobic forest, usually with two layers and two generations. The number of strains and diameter distribution, is down J-type decline curve, but there is not typical left peak. Also analyzed some other stand structure characteristics, for the correct understanding of the actual stand, the development of scientific management measures, there is an important reference value.