Overview
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ABSTRACT
The renaturation of urban environments represents a major challenge, whether it is to implement a strategy of zero net artificialisation on one's territory or to make our cities more permeable to life, more vegetated and more pleasant to live in. Based on the understanding of living organisms and their complex mechanisms, renaturation invites approaches and practices that are different from the traditional greening and landscaping that have long been the norm in cities. It is part of a return to the open ground and living soil and is thought of on several scales, from the project to the territory.
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Read the articleAUTHORS
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Marc BARRA: Ecologist - Île-de-France Regional Biodiversity Agency, Institut Paris Region, France
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Gwendoline GRANDIN: Ecologist - Île-de-France Regional Biodiversity Agency, Institut Paris Region, France
INTRODUCTION
The term "renaturation" refers to the general idea of "returning to a natural or semi-natural state ecosystems that have been degraded, damaged or destroyed by human activities". . Historically associated with the restoration of degraded natural areas, this concept has been gaining ground in urban environments since 2018, with the introduction of the "zero net artificialization" (ZAN) objective. Despite its rise to prominence in political discourse and objectives, it is still subject to different interpretations depending on the players involved (ecologists, developers, urban planners, landscapers, etc.). First and foremost, renaturation should not be understood solely in terms of ZAN's accounts, as a simple strategy for compensating for artificialisation. It can also be deployed voluntarily to curb the erosion of biodiversity in urban environments, or as part of a strategy for adapting to climate change. What's more, renaturalizing the city isn't just about going green! It's a commitment to a new relationship with the world around us, radically different from the one that has prevailed until now. Of course, renaturing means restoring soil, replanting, recreating habitats, welcoming species... but it also means reinforcing green and blue webs, re-establishing ecosystems and recovering ecological functions.
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KEYWORDS
ecological engineering | urban nature | urban ecology | urban soils | déminéralisation
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Bibliography
Regulations
Non-exhaustive list
Law no. 2021-1104 of August 22, 2021 to combat climate change and strengthen resilience to its effects (JORF no. 0196 of August 24, 2021).
Decree no. 2022-763 of April 29, 2022 on the nomenclature of land artificialisation for setting and monitoring objectives in planning and urban development documents (JORF no. 0101 of April 30, 2022).
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