Evaluation of the Role of Sponge City as a Green-Blue City in Improving the Level of Ecosystem Services of Shiraz City

Today, with the development of urbanization, the green-blue space in urban areas has received wide attention and has become an important symbol of the health of the urban ecosystem. In this context, it is very important to pay attention to ecosystem services in the planning of the sponge city provided by green-blue infrastructure. In this regard, the current research was conducted with the aim of evaluating the role of the sponge city as a green-blue city in improving the ecosystem services of Shiraz city. The results of the content analysis showed that out of the 35 identified components related to the four most important categories of the green-blue infrastructure ecosystem services of the sponge city by the expert team, after ranking it was determined that the component of sustainable water supply (A1) from the subcategory of production services, the component of effective control of runoff Urbanization and reduction of road flooding (D15) and risk management and flood risk (D3) from the sub-group of regulatory services were ranked first to third with acquired scores of 26.25, 25.55 and 24.78, respectively. Also, in the field of green-blue infrastructure support services of Sponge City, the components of preserving, revitalizing and strengthening vegetation (B4) and restoring natural ecosystems (B3) were ranked tenth and eleventh respectively with scores of 19.77 and 19.63. After social-cultural services, the component of communication and better access to nature (C4) was ranked thirteenth with a score of 19.22