Ecological characteristics of habitats Galium triflorum Michx. (Rubiaceae)

For the first time, an ecological characteristic of the habitats of Galium triflorum Michx. cenopopulations growing in the habitats of the Arkhangelsk, Nizhny Novgorod, Tver regions and the Republic of Mari El was given using the bioindication method according to the scales of D.N. Tsyganov (1983), and the realized ecological valence and the coefficient of ecological efficiency were calculated. The results showed that in the Tver region, the cryoclimatic scale can be expanded to the right, up to 9.50 points, in the direction of increasing the effect of the factor. For the first time, the ecological positions of the species were determined for this species on the scale of soil nitrogen richness (Nt), the scale of soil acidity (Rc) and the scale of moisture variability (fH).