E.V. Nevidomova, A.S. Lastina

This work studies the influence of antropogehic factors to the coenopopulations Campanula patula in the meadow phytocoenoses of the green area Crasnobacovsky district Nizhegorodsky region. At present the meadow and forest phytocoenoses of the Crasnobacovsky district is feeling a big load of recreation. During this process the thickness and structure of his forest litter, and meadow felt whose role is very important, are changed. The forest litter and meadow felt supplies organic matters and regulates the microclimate. Alterations of the forest litter and meadow felt at the infringed phytocoenoses are manifesting more also in the correlations between vital forms of plants. The rhythmic and sizes of the main predominating species are changed. For example, a height of the stem of Campanula patula at the meadow phytocoenoses in the first stage of digressive reaches max 90 centimetres, being the thickness of the meadow felt 11 centimetres. At the meadow phytocoenoses of the third stage of digressive thickness of the meadow felt 5 centimetres it reaches 25 centimetres. Is nothing the delay of flowering approximately 2 days. The number of plant populations reduces of 13,1 pieces on 1×1 m to 10,2 on 1×1 m. Therefore, aiming the preservation of species, it is necessary to establish the control of a number of plant populations, the introduction to botanic gardens, the organization of forest reserves.