Abstract:

The species diversity and geographical component of Agarics and Boletus in the Greater and Lesser Khinggan Mountains were studied from 2014 to 2016. A total of 3,363 fungal specimens were collected and identified into 661 species belonging to 1 phylum, 4 classes, 18 orders, 61 families and 180 genera. Among them, 185 species were edible, 92 species were medicinal, and 110 species were poisonous. There were 16 dominant families (containing equal and more than 10 species), accounting for 27.87% of the total number of families, and 519 species accounting for 78.51% of the total number of all Agarics and Boletus species. There were 45 families(containing less than 10 species), with 142 species accounting for 21.48% of the total number of species. There were 29 dominant genera which contain equal and more than 5 species, accounting for 16.11% of the total number of genera, and 412 species accounting for 62.33% of the total number of species. In the respect of the floristic composition, this region was mainly composed of the species belonging to north temperate zone distribution, world-wide distribution and Eurasia continent distribution. Among them, 216 species were only distributed in the north temperate zone occupying 32.68% of all species, 167 species were world-wide distribution occupying 25.26% of all species, and 161 species were only distributed in the Eurasia continent occupying 24.36% of all species in the Greater and Lesser Khinggan mountains.

Key words: Agarics and Boletus species, species diversity, floristic, dominant family, distribution type