The Siberian dwarf pine, Pinus pumila, is one of the representative species in maritime-boreal zone of Russian Far East. The growth form of this species shows a shrub-like dwarf tree in the alpine zone, usually less than 2 m in canopy height, but it does a somewhat upright tree shape, over 2 m in height, in the forest zone. The difference of altitude and growth form between habitats seems to derive a large variation of temperature condition on leading shoot of P. pumila, resulting in a great impact on the shoot growth. However, few studies so far examine the temperature condition of P. pumila on the individual shoot level. The objective of this study is to demonstrate the temperature condition of P. pumila growing in the alpine and the forest zones for well understanding an ecological significant of the growth-form variation in the different environment of the Zeysky Nature Reserve, Russian Far East. Kira’s WI varied from 25.2ºC month to 48.3ºC month. Within-site variations were very small, and most variations occurred among sites along the altitude. In contrast, Kira’s CI showed large within-site variations, varying from 73.8ºC month to 155.5ºC month.