Ecological characteristics of Campanula bononiensis L. habitat

The first ecological characteristics of the habitat of Campanula bononiensis L. cenopopulations growing in the conditions of Ulyanovsk and the Republic of Mari El (RME) is given with the help of bioindication methods. Besides the potential and realized ecological valency, ecological efficiency and tolerance index are calculated [8]. The results has shown that for Ulyanovsk the scale of the soil acidity for this species can be widened 0,03 grades to the left and the scale of soil nitrogen saturation can be widened 2,21 grades to the right. For RME the scale of soil nitrogen saturation for this species can also be widened 0,31 grades to the right.