Avaliação de projetos de requalificação fluvial urbana em uma abordagem integrada de aspectos econômicos, sociais e ambientais

Abstract

The occurrence of floods has always represented a challenge for cities due to the pressure on land use that changes not only the flow regime but also the ecological and ecosystem functions of the environment. With the evolution of the drainage concept, which began to seek to establish environmental awareness and new technologies aligned with sustainable development, subjects such as green and blue infrastructures, multifunctional landscapes and open space systems have been gaining ground in the literature. Within this context, an opportunity arises for urban river restoration, with the potential to integrate river parks along the banks of urban rivers as measures of green and blue infrastructure, fulfilling environmental and social functions. However, co-benefits of sustainable systems are usually not considered, since the selection of the design alternative to reduce flood risk is traditionally based on economic efficiency, focusing on damage reduction. Thus, this Thesis proposes a two-step assessment to measure the benefits arising from river restoration designs. The first step is based on a multi-criteria approach with economic, social and environmental indicators and the second one provides an economic valuation of a range of benefits included in the multi-criteria assessment. The proposed method allows structuring the potential benefits of each design alternative and indicates to the decision-maker the feasibility (or not) of its implementation