9Harper JL. 1967. A Darwinian approach to plant ecology[J]. J Ecol,55:247-270.
10Hoffmann MH, Ermakov NB. 2008. Biogeographical study of West Siberian hemiboreal forest associations with species range overlay methods[J]. Flora-Morphol Distr Funct Ecol Plant, 203(3) :234 242.