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I-Tree Eco - nowe źródło informacji dla planowania zieleni w mieście

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Sitarski M. , Szczepanowska H. B. , Carewicz N. , Sudra P. , Jedraszko-Macukow M.

nr 3-4

One condition of rational development of city areas is estimating the value of green and blue infrastructure in addition to the value of technical infrastructure (its value is usually calculated very precisely). Green infrastructure (including trees and shrubbery) is still treated as a free-of-charge unlimited feature, which results in its exclusion from the economic balance of city management. This approach to trees and shrubs was justified when there were no methods of calculating their value. Currently however such methods do exist both in the world and in our country. Using them enables us to evaluate the replacement (structural) value of trees and shrubs. On the basis of structural value it is possible to estimate the accessible ecosystem services such as oxygen production, carbon collection, absorption of pollution, advantages to health, aesthetic values and others. One method designed for estimating structural and functional, and consequently monetary, values of ecosystem services supplied by trees and greenery areas in general is the i-Tree Eco model which enables obtainment of significant and diverse information on distribution and functioning of greenery in cities. This information may constitute an extra source of knowledge about planning and development of city spaces.