Minin, Aleksandr Spatial peculiarities of phenological reactions of trees to climate change on European territory of Russia

A.A. Minin , I.N. Ilyina , A.V. Voskova , E.E. Plissetskiy (2015)

Annotation
The paper presents the results of the analysis of the ranks of the dates of the deployment of the first leaves and duration of vegetation period of birch (Betula pendula Roth. (B. verrucosa Ehrh.)), as well as the start of flowering bird cherry tree ordinary (Padus avium), mountain ash (Sorbus aucuparia) and Linden (Tilia cordata Mill.) for the period 1970 - 2010 in the Central part of European Russia to assess trends. Was noted the effect of the differences in phenological reactions in homogeneous climate change amongst the trees of the same species from the Northern and southern parts of areas. If in the Northern part (taiga zone) spring events began to occur to 3-7 days earlier, in the southern broad-leaved forests, forest-steppe) trends do not exist or are positive. This may indicate that the implementation of different mechanisms of adaptation of trees to climate change. In the Northern part there are opportunities for reducing the period of winter rest within the conditions of warming and increasing of the duration of the vegetation period. In the southern part of the further reduction in the duration of the period of winter rest is impossible (in plants are certain biochemical processes), so the change of dates of the onset of phenophases not observed. Proceeding from this, one should expect a further warming (up to certain limits) when reaching the optimal values of the duration of the periods of vegetation and winter rest in the Northern part of the area also stabilize the timing of seasonal events in the trees.