Published on 12 January 2018
The aim of this study is to evaluate the greenery phytomass of mountainous urban landscapes. The stability of the environment amongst other things is provided by large quantity of masses of living organic substances, including the greenery. To form and support the environmental endurance of local territory a scientific approach based on calculation of parameters of structural elements of the ecosystem is needed. The author’s method suggests determining the limit values of the territorial ecosystem characteristics based on the analysis of its idealized model, i.e. model ecosystem. The idea is supposed to be implemented, in particular, by means of defining the monoculture and determining its life expectancy in the urban environment, assumptions of uniform expenditure and regeneration of renewable resources as well as compliance of equal square plots for monoculture’s placement with its life expectancy. The suggested approach to the idealization of the subject researched includes formation of the model ecosystem based on the considered real ecosystem’s properties. At the same time the optimal allocation of the monoculture at the hypothetical area from the point of maximum assimilation abilities of the environment is accepted. Research results. The analysis of dynamics in respect of change in dendrometric indicators of tree stands allows to display the taxonomic parameters of considered monoculture in relation to its lifespan in the urban environment. Hence to realize the authors’ method of computation for a phytomass stock, one has to do as follows: – consider change in green plants’ productivity as exemplified by the model equivalent of real examined ecosystem; – determine the most viable green higher plant (a monoculture) for the model ecosystem urban landscaping; – consider a sequence of change in phytomass stock of the model ecosystem in terms of the selected monoculture’s age interval; – set the limits of correspondence between the monoculture’s phytomass stock planted within the residential zone and its life expectancy in urban environment; – compute a phytomass stock of the green plants; – compute a phytomass stock of the monoculture in point according to a planted area at the territory of the model and equivalent ecosystems. The research has led to generation of polynomial and allometric equations for assessment of dynamic of greenery’s phytomass stock. Conclusion. The results of modeling enable a researcher to determine e.g. maximum allowable loadings of pollutants on ecosystem in local areas.
Tags: ясень, модельная экосистема, продолжительность жизни монокультуры, фитомасса.
ISSN 1998-4502 (Print) ISSN 2499-975Х (Online)