Assessment of stocks of medicinal plants in the forests of the Leningrad region

Abstract

The purpose of the study is to update and concretize the previously developed method of quantifying stocks of medicinal plants during vegetation shifts under the influence of continuous logging. For each type of forest growing conditions (LRU), the dynamics of the projective covering of medicinal plants found in its forests with the predominance of different breeds and different stages of recovery dynamics after logging were revealed. On the basis of correlation dependencies, the phytomass of harvested plant parts for all types of forests and stages of regenerative dynamics, their biological and operational reserves have been established. Calluna vulgaris, Cetraria islandica, Arctostaphylos uva-ursi are abundant in forests of cranberry and lichen types of LRU. In cranberry pine forests, it is also possible to harvest cranberries (Vaccinium vitis-idaea), and in cranberry spruce forests, blueberries (Vaccinium myrtillus) are also possible. On normally drained loams and binomial deposits in blueberry and sour types of LRU. Majanthemum bifolium, Oxalis acetosella, Vaccinium myrtillus and Vaccinium vitis-idae are constantly found in forests of these types. After logging, the abundance of these species (except cranberries) decreases, such medicinal plants as Rubus idaeus, Chamaenerion angustifolium become dominant in cuttings and in young plants. A significant number of medicinal species are found in swampy and swampy bagulnik and sphagnum forests (Vaccinum myrtillus, Calluna vulgaris, Ledum palustre, Eriophorum vaginatum, Vaccinium vitisidaea). Athyrium filix-femina, Filipendula ulmaria, Aconitum septentrionale, Aegopodium podagraria, Pulmonaria officinalis, Urtica dioica are found in the forests of the humidification flow range. Athyrium filix-femina, Filipendula ulmaria, Equisetum sylvaticum, Lysimachia vulgaris, Menyanthes trifoliata, Comarum palustre.