Рresented the results of floroecological, hydrobotanical and geobotanical researches of the Regional Landscape Park "Samara Plavni". Regional Landscape Park (RLP) "Samara Plavni" is located in the waters of the Samara Bay, which was formed as a result of flooding of the floodplain of the Samara River during the creation of the Zaporozhye (Dnieper) Reservoir and the surrounding area. Conducted a systematic and bioecological analysis of the flora of vascular plants. Studied the composition of the rare fraction of flora and associated flora element. The research was carried out according to the generally accepted methods of floristic, geobotanical and hydrobotanical research. Bioecomorphic characteristics of species (selection of ecomorphs) are compiled according by A. L. Belgard ecomorph system using the following ecomorphs: biomorphs (one-, two-, perennials); heliomorphs (relation to light); hygromorphs (relation to the aquatic environment); tropomorphs (relation to nutrition); cenomorphs (growth in certain phytocenoses). Ecological characteristics of species were given from literature sources and according to the results of many years of own research. The analysis of the adventitious fraction was carried out at the time of drift – archaeophytes, neophytes. Advent status was determined on the basis of literature data. Vegetation of the regional landscape park "Samara Plavni" is represented by natural and semi-natural groups. The main area of shallow water is occupied by massifs of Phragmites australis (Cav.) Trin. ex Steud and groups of submerged vegetation. The tree and shrub vegetation of the park is represented by natural forest complexes, semi-natural groups and artificial plantations. Meadow and meadow-swamp vegetation of the landscape park is represented by complexes of associations of mesophytes and hygrophytes. The floristic list of vascular plant flora is 617 species. Hemicryptophytes, perennials, sciogeliophytes and heliophytes, mesotrophs, mesophytes, hygrophytes predominate here. Among cenomorphs, most species are represented by meadow (139) and forest (108) species. The rare fraction of flora is 73 species. There are 128 species of ruderal flora and 140 species of adventive flora, including 6 invasive species. At the time of entry into the study area allochthonous element of flora is divided into two groups: archaeophytes – 63 species (45%) and neophytes – 77 species (55%).
Сlimatic factors play the most important role in the plant associations formation. Sunlight is one of the leading factors that determine the appearance of a particular community and very often plays the limiting factor role. In the conditions of the Steppe Dnipro Region, its limiting role can be expressed only in its excess. The great majority of autochthonous steppe flora plant species has strongly pronounced adaptations to excessive solar insolation. With the development of forest biogeocenology and steppe forestry, more and more attention is paid to the issues of forest climatology. It is shown that climatic factors have an imperative effect on the formation of soils, plant associations, fauna and ecosystems in general. Artificial plantations consisting of fast-growing hardwoods, such as Robinia pseudoacacia, have been studied. The complex of abiotic factors in robinia plantations and in open areas has its own characteristics. The processes of reflection, transformation and accumulation of solar energy in tree plantations have a slightly different character than in forest-free areas. In the Dnipropetrovsk region, the populations of Robinia pseudoacacia are represented mainly by young plants that have already entered the phase of active fruiting. No plants older than 100 years were found in the populations. Thus, the price spectrum of the age composition of the population of Robinia pseudoacacia in the Dnipropetrovsk region has a pronounced left-sided character, ie shifted towards young individuals that are actively fruiting. This indicates that the processes of expansion of Robinia pseudoacacia to natural biogeocenoses will be actively continued. Despite the fact that this breed has a number of positive qualities (excellent medonis, root mycorrhiza with azotobacter, high gas resistance, etc.), the processes of uncontrolled active settlement of this species is a matter of serious concern. This breed is capable of rapid spread and disruption of successional processes occurring in the area. In the conditions of the forecasted climate changes towards temperature increase and precipitation decrease this breed receives more and more advantages.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.