The research of Quercus mongolica's genetic diversity, partition group and the way of choosing first-class provenances has been done in the experimental forest of geographical provenances of Quercus mongolica. The study was made using the principles of population genetic, bio-system and eco-botany, and was carried out in the areas of the growth characteristics, photosynthesis rate, transpiration rate, nitrate reductase, soluble protein concentration and fluorescence induction kinetic parameters, as well as ...