Algorithm for assessment and modeling of some ecosystem services in urban areas (Plovdiv, Bulgaria)

In recent years, ecosystem services have been increasingly recognized as a recommended tool for environmental management. The concept of ecosystem services integrates ecological, social and economic principles. Society has long been aware of its dependence on the products and services provided by nature such as food, water, herbs, fuels, etc. Recently, the importance of some indirect services, such as climate regulation, water filtration, soil fertility, as well as some cultural services, has become increasingly evident. In addition to the in-depth understanding of human dependence on natural processes at different temporal and spatial scales, there is also the need to measure the value of these ecosystem services according to economic and management criteria and indicators. Accordingly, in this study we aimed to propose an algorithm for assessment and modeling of some ecosystem services in urban areas, which was developed and validated based on our studies in the city of Plovdiv, Bulgaria). The proposed methodological framework includes several steps, representing a scientifically basis for such research, which, combined with a farsighted policy, professional and financial resources, will promote the sustainable development of urban ecosystems in the future.