Ectomycorrhizal development in a Pinus thunbergii stand in relation to location on a slope and effect on tree mortality from pine wilt disease

摘要: The relationship between ectomycorrhizal development and mortality from pine wilt disease was studied in an artificial Pinus thunbergii Parl. stand on a slope. of ectomycorrhizae the survival trees showed same tendency, which suggests correlation mycorrhizal resistance to disease. roots mycorrhizae greater upper part ratio total fine taproots also higher Tree clearly biased more survived slope than middle lower parts. There no significant difference number feeding wounds made by sawyer beetle, demonstrates opportunity infection with this clear composition soil substrate such as carbon, nitrogen, phosphorus. abundant slope, mitigate drought stress, may have decreased rate tree mortality.