Ecohydrologie urbaine et changement climatique
<p>Due to global change, cities of the future will have to deal with more intense runoff and longer drought sequences, in addition to a growing urban and peri-urban population. French Mediterranean cities, such as Toulon, are already densely urbanised and exposed to the effects of global warmi...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Copernicus Publications
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/e8fa6eb391f446ffb8e58d996f9924c7 |
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| Sumario: | <p>Due to global change, cities of the future will have to
deal with more intense runoff and longer drought sequences, in addition to a
growing urban and peri-urban population. French Mediterranean cities, such
as Toulon, are already densely urbanised and exposed to the effects of
global warming. The adaptation of their infrastructures is problematic.
Cities with high development potential, such as Dakar, offer the opportunity
to imagine other solutions for the management of water resources and its
extremes in the context of global change. In particular, it is a question of
managing the flows of water and substances linked to intense runoff events
according to an ecohydrological logic that makes it possible to reduce
environmental risks and increase social and economic benefits. To do this,
we use a hydrologically-based geomatics model (IRIP) that produces
predictive maps of areas of generation, transfer and accumulation of intense
runoff and associated nutrients. This allows us to target effective
intervention areas to reduce risks and increase water resources, for example
by simulating land use change in appropriate locations and at the same time
stimulating specific biological processes. The fundamental principle of
ecohydrology is to balance energy flows with biological metabolic flows at
the sub-catchment scale. The mapping of intense runoff processes is a first
step illustrated in this article for the cities of Toulon and Dakar. This
first step is part of the Dakar'2030 project, which aims to rethink urban
development and adapt it to climate change.</p> |
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