Hydrological Evaluation of Urban Greening Scenarios: Application to the City of Nantes, France

Abstract : Urban population is growing and will still increase in the future. Urbanisation modifies both local climate and water cycle. Introduction of vegetation in cities is supposed to be a solution to limit the urbanisation impacts by increasing water infiltration and favoring evapotranspiration. In the framework of the VegDUD project, different greening devices have been identified and specifically studied for assessing their impact on the urban climate and water cycle. At the scale of a large urban area (in the city of Nantes, France), some greening strategies have been simulated: greenroofs, trees/grassed areas and different fractions of natural surfaces. The energy urban scheme TEB with GREENROOF and HYDRO modules allows the evaluation of the greening strategies in regards to urban hydrology and climate. This article focuses on hydrological impacts and presents preliminary results showing that the vegetation fraction impacts more the total drainage or latent heat flux than the vegetation type (high or low vegetation sedum).
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Conference papers
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Submitted on : Tuesday, March 27, 2018 - 11:04:58 AM
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  • HAL Id : hal-01744175, version 1

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Katia Chancibault, Aude Lemonsu, Jean-Marc Brun, Cécile de Munck, Aude Allard, et al.. Hydrological Evaluation of Urban Greening Scenarios: Application to the City of Nantes, France. 13th International Conference on Urban Drainage, Sep 2014, SARAWAK, France. 8p. ⟨hal-01744175⟩

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