Assessment of ecosystem functions of public green spaces in the city of Berezhany, Ternopil region

Abstract

Researching the possibilities of using modern approaches and tools for evaluating the ecosystem services of green spaces is relevant and requires theoretical justification and applied research, especially in the context of the importance of ensuring the sustainable development of Ukraine. Therefore, the purpose of this study was to work out the procedure of quantitative and cost evaluation of ecosystem services of green spaces for public use and search for opportunities to present the received information to stakeholders. For this, an inventory of green spaces was carried out with the measurement of their biometric and sanitary indicators. For quantitative and cost assessment of the ecosystem functions of plantations and individual trees, the i-Tree Eco toolkit was used, and the Google My Maps application was used for their visualization. The conducted study helped obtain information about individual ecosystem functions of green spaces (reduction of pollutants, carbon absorption and sequestration, oxygen production volumes and regulation of surface water flows). As part of this utility, the annual ecosystem function for the absorption of 770 kilograms of harmful compounds (ozone, carbon monoxide, nitrogen dioxide, and particles of various sizes) was calculated, which is estimated at UAH 128,648,000 annually; reduction of air pollution by 7.43 metric tonnes of gross carbon sequestration (19 kg per 1 plant), with an estimated cost of UAH 41,028,000 and a reduction of water runoff by 684.9 cubic meters, which is estimated at UAH 47,042 of annual utility. Furthermore, as of the moment of the study, the researched green spaces retain carbon in their tissues, which creates an ecosystem benefit in the amount of UAH 1,493,009 thousand (€36,901). The highest indicators of ecosystem usefulness are inherent in park stands, while the trees and bushes of the central part of the city are more effective in absorbing pollutants. Trees capable of achieving significant biometric indicators in local conditions are characterized by greater ecosystem productivity. The conducted study creates conditions for better awareness of the ecosystem value of green spaces, but its popularization is also important. The practical value of the results also lies in the possibility of bringing them to authorities, enterprises, and organizations, activists and other stakeholders, which will create conditions for improving environmental awareness, promoting the security and protection of tree stands, improving management and making informed decisions in the field of green construction