摘要： This paper summarized the ectomycorrhizal fungal resources and their ecological characteristics of the major forested areas in DaqingMountains , Inner Mongolia , by the method of observation combined with line transect method . Referring to the previous study and using the methods of fruit body identification in the field and culture inoculation in the laboratory, preliminary results obtained , indicating that there are 163 species of ectomycorrhizal fungi in Daqingshan Mountains. These 163 species, comprising 26 . 6% of all the ectomycorrhizal species recorded in China , belong to 18 families and 41
genera . In this survey, 46 species of this region were reported for the first time; comprising 28 . 2% of all the ectomycorrhizal species recorded in DaqingshanMountains , and 5 species were still not identifiable at the species-level . All the edible ectomycorrhizal mushrooms from Daqingshan Mountains belong to 15 families and 30 genera ( 1) among them there are
39 species of 2 genera in Russulaceae , 13 species of 2 genera in Cortinariaceae , 12 species of 5 genera in Tricholomataceae, 4 species in Amanitaceae , 2 species of Clavariaceae . The host tree species for them are Betula platyphylla Suks ., Populus davidiana Dode ., Picea asperata Mast ., Quercus mongolica (Fisch .) Turcz ., and Ostryopsis davidiana Decne, (2 )
and there is 28 species of 8 genera in Boletaceae, the host tree species for Boletaceae are mainly Pinus tabulaeformis Carr ., Larix principis-rupprechtii Mayr ., Picea asperata Mast ., Betula platyphylla Suks ., and Ostryopsis davidiana Decne .