Контрастная адвентизация подлеска и травяно-кустарничкового яруса лесов Екатеринбурга и окрестностей

Abstract

The purpose of the work is to compare the number of alien plants in undergrowth and field layer of urban forests and exurban forests. The 235 trial plots (each area – 400 square meters) were examined. The 128 plots was located in urban forests and 107 – in exurban forests. On average, on the area, alien shrubs and trees accounted for 30 % (in the city) and 12 % (outside the city) of the total undergrowth richness. In field layer, on the average, the number of alien plant species in the plot was less than 1 % both in urban forests, and exurban forests. Thus, the undergrowth is transformed by alien species more, than field layer.