ПРОБЛЕМЫ УДАЛЕНИЯ ИНВАЗИОННОГО ВИДА ACER NEGUNDO L. ИЗ НАСАЖДЕНИЙ Г.МОСКВЫ

Abstract

On the territories of Moscow, Acer negundo L. (ash-leaved maple) occupies large areas and is one of the first places in terms of quantity among other species. It is recognized as an alient invasive breed for Central Russia. Invasive species pose a threat to natural flora, therefore, their distribution and number must be controlled. There are decrees for the removal of this breed in Moscow, but the number of plants in the city does not decrease, and new specimens continue to be planted. The article discusses the features of the legislation regarding the removal of A.negundo as an invasive species on the territories of the green fund of Moscow, as well as the biological features of this species that complicate the removal of specimens and the management of its coppice and seed renewal. According to the regulations established in Moscow, in the territories occupied by green plants, since the ash-leaved one should be gradually removed from the territory, since old specimens are gradually cut down (if they are affected by diseases and pests, dead or emergency), do not plant new trees of this species recommended. In practice, the number of trees does not decrease, and the rapid growth of self-sowing leads to the fact that in a short time the self-sown plant goes into the category of “tree”, which cannot be removed. In natural areas, for A.negundo, felling, uprooting, annual removal of growing shoots and of juvenile specimens are envisaged. Due to biological characteristics (multi-trunk, extensive root system, high ability to grow overgrowth after cutting the trunk, high germination of seeds and their spread over long distances), these measures for the removal of the species are insufficient. In particular, uprooting leads to a violation of the integrity of the biocenosis, and often it is impossible to carry out it. Without the development of a complex of forestry and chemical control measures, the withdrawal of the invasive species A.negundo from the plantations is impossible.