Some aspects of Arsenjevia baicalensis ecology on Hamar-Daban ridge (South Pribaikalye)

Results of long-term researches on influence of some environmental factors on course of seasonal devel-opment of Arsenjevia baicalensis in South Pribaikalye (Hamar-Daban ridge) are presented. Correlation relation between phenophases parameters (approach dates, duration) and thermal properties of humus soil horizons (Σ temperatures ≤ 5°С, Σ temperatures ≤ 10°С, Σ positive temperatures, date of an establish-ment the effective and active temperatures) is characterized; and also - between phenophases parameters and air temperature (total values, dates of an establishment the effective and active temperatures).