Dynamics of plants net-photosynthesis in shrub layer of larch forest in Central Yakutia

In work net-photosynthesis daily schedules of 5 kinds of shrub layer in march forest (Betula platyphylla Sukaczev, Salix bebbiana Sarg., Alnus hirsuta (Spach) Turcz. ex Rupr., Rosa acicularis Lind. are described, Pyrola incarnata (DC.) Freyn) on months of 2004 year vegetation period are described. Dependence of net-photosynthesis parameters on kinds from illuminance and temperature is established. The studied kinds shows adaptation to various conditions of inhabitance by transformation of assimilatory activity of photosynthetic apparatus. Characteristic of physiological feature of all studied kinds of plants - absence of day time photosyn-thesis depression is noted.