Mapeamento das perdas econômicas potenciais dos pontos de alagamento do município de São Paulo, 2008-2012

Santos, Eliane Teixeira dos; Haddad, Eduardo Amaral

doi:10.1590/1809-4422asoc969v1742014

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The suppression of vegetation, although not located in APP, leads to a decrease in the infiltration of rainwater, which may contribute to the occurrence of problems during rainy periods (Fardin, et al 2018). The removal of vegetation creates even more impermeable surfaces, generating changes in runoff and drainage (Santos & Haddad 2014). Studies indicate that when green and permeable areas are increased compared to conventional urbanization, it leads to a decrease in peak flow (Tavanti & Barbassa 2012), which would be extremely beneficial in the case of the municipality of Governador Valadares, considering its flooding history, in addition to several other ecosystem services.…”

Section: Protected Territories: Preservation Areas Vegetation Removal and Urban Afforestationmentioning

confidence: 99%

Environmental Consequences Of Urban Expansion: Case Study Of Environmental Licensing Processes In The Municipality Of Governador Valadares

Fardin

Nascimento

Fardin³

2021

GES

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Urban growth is often accompanied by significant environmental changes, which include modification of the natural landscape and the problems related to it, such as real estate speculation, marginalization of the population, landslide risks, flooding, as well as pressure on environmentally protected areas. Therefore, it is necessary to understand how will new urban development affect the already modified space without generating further environmental problems. The research aimed to analyse five projects of allotments in Governador Valadares/Brazil between 2015 and 2017. Besides the information on the projects themselves, geographic information systems (GIS) were used along with laws and bibliography. The biggest obstacle observed was the lack of standardization in the process required by the City Hall, which culminated in projects with different characteristics, including those that did not present important analyzes, such as the Civil Construction Waste Management Plan. It is necessary to move forward in discussions related to urban environmental sustainability, standardizing the possible actions, not only in the municipality of Governador Valadares.

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Section: Protected Territories: Preservation Areas Vegetation Removal and Urban Afforestationmentioning

confidence: 99%

Environmental Consequences Of Urban Expansion: Case Study Of Environmental Licensing Processes In The Municipality Of Governador Valadares

Fardin

Nascimento

Fardin³

2021

GES

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Green roof infrastructure outperforms grey technology in flood mitigation in São Paulo’s urbanized region

Ferreira,

da Rocha

2023

Front. Built Environ.

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São Paulo City, Brazil, a densely urbanized area in a tropical climate region, is facing increasing challenges from flooding. However, a promising solution has emerged in the form of Nature-Based Solutions (NBS) infrastructure, surpassing traditional grey technology in flood mitigation. This article examines the effectiveness of green roofs in reducing flood risks and highlights their superiority over conventional approaches. We analyzed the direct impacts of surface permeabilization in public areas (sidewalks, streets, and squares) and private areas (urban lots, subdivisions) on runoff volume and peak flow in the Aricanduva River basin in São Paulo city. We used a thoroughly validated hydrological model to compare the interference in the land use of the watershed between a green infrastructure type called Green Roof (GR) and a gray technology called Permeable Pavement (PP), in terms of hydrological efficiency in mitigating floods. The flow and water level simulations for varying areas with GR or PP covered a wide range, allowing for situations above or below the canal overflow level, which provided a good distinction of the impact of boundary conditions. Overall, we observed a positive hydrological response, with a reduction in peak flow and runoff volume proportional to the increase in permeable area, and consequently, proportional to the increase in GR or PP surface within the contributing area. As the main contribution, the hydrological performance calculated with the variation of GR was remarkably superior to the variation of PP in terms of requiring a smaller coverage area with interference to prevent overflow or achieve equivalent efficiency. It is worth noting that the substitution of approximately 24% of the gray roof area with GR prevented canal overflow, which is notably lower than the required substitution of approximately 40% for PP interference. We reinforce the relevance of green roofs as an option to mitigate intense hydrological effects in urban areas and, more importantly, paves the way for other NBS with the same hydrological principles and environmental co-benefits to work individually or in combination.

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Mapeamento das perdas econômicas potenciais dos pontos de alagamento do município de São Paulo, 2008-2012

Cited by 2 publications

References 17 publications

Environmental Consequences Of Urban Expansion: Case Study Of Environmental Licensing Processes In The Municipality Of Governador Valadares

Environmental Consequences Of Urban Expansion: Case Study Of Environmental Licensing Processes In The Municipality Of Governador Valadares

Green roof infrastructure outperforms grey technology in flood mitigation in São Paulo’s urbanized region

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