大青山油松人工林地外生菌根分布与立地条件关系

Distribution of Two Species of Ectomycorrhiza and Its Relationship With Site Condition in Artificial Chinese Pine Forest of Daqing Mountains

文章以大青山油松人工林为研究对象,调查和观察了2种外生菌根的形态特征、分布规律,并分析外生菌根分布与立地条件的关系。结果表明,在大青山油松人工林地优势乡土外生菌根真菌为乳牛肝菌属(Suillus Mich.ex Gray)真菌,主要分布在林分密度小的阴坡上部,土生空团菌(Cenococcum geophilum Fr.)分布在林分密度较大的阴坡中、下部样地,表明立地条件对外生根菌的分布有明显的影响。

We investigated regularities of distribution and morphological character of two species of ectomycorrhiza and its relationship with site condition in artificial chinese pine forest of Daqing Mountain. Results show that： the preponderant ectomycorrhizal fungi is Suillus Mich.ex Gray in artificial chinese pine forest of Daqing Mountain. Suillus Mich.ex Gray mainly distributes in the upper part of shady slope where have low stand density. Cenococcum geophilum distributes in the middle and lower part of shady slope where has high stand density. Thus, site condition can significantly affect the distribution of ectomycorrhiza.