Abstract: The relationship between ectomycorrhizal colonization and rhizosphere soil fertility of Tilia amurensis Rupr. in Laoshan Ecological Station of Maoer Mountain was analyzed by means of Pearson correlation analysis and stepwise regression analysis. The results showed that there were highly significant negative correlations between the ectomycorrhizal colonization rate and four variables including alkaline phosphatase activity, alkaline hydrolysis nitrogen, available phosphorus and soil water contents. Ectomycorrhizal colonization rate showed a highly significant positive correlation with urease activity, and a significant positive correlation with available K content. Alkaline phosphatase activity and soil water content were the main soil fertility factors influencing the ectomycorrhizal colonization rate of T. amurensis.

Key words: seedling, age structure, slope aspect, Juglans cathayensis, growth