In 2019, Toulouse Métropole was selected by the European Commission in the framework of the LIFE programme for the Environment and Climate action. The chosen project, based on experimentation and scientific partnerships, aims at revegetating the north part of the Ramier Island. More generally speaking, the LIFE GREEN HEART (Generate REsiliENt actions agaiNst the HEat islAnd effect on uRban Territories) project will create a new green lung on the Ramier island, as part of the Grand Parc Garonne project.
A green island to develop the biodiversity and to fight against global warming and to ensure a biodiversity-friendly environment
Climate models are foreseeing a rise of 4°C in Toulouse by the end of the century. The deconstruction and relocation of the Exhibition Center (Parc des Expositions) built between 1952 and 1990, will allow to rebuild a green heart in the core of the city.
In total, 13 hectares of green spaces, parks and gardens, will be created in order to replace of the current buildings, streets and parking lots.
This project aims to reduce by 3°C the local temperature on the Ramier island and to bring a cooling to the nearby districts.
It will participate in the development of biodiversity, including by the strengthening of ecological corridors. The riverside vegetation will be reinforced and thickened. The air and noise pollution will be reduced on the Ramier island thanks to the priority given to soft mobility.
A project selected by the E.U. for its innovative characteristics
LIFE Green Heart project brings a scientific value to the development plan of the Ramier island. The impoverished soils will be restored and fertilized with ecological innovative methods. This will be implemented in coherence with the choice of vegetal species adapted to the local ecosystem.
This transition will be monitored with the simultaneous measures of biodiversity, temperatures, pollutions and social perceptions evolutions.
The impacts of the project will exceed the strict perimeter of the island. It will increase the knowledge of the regreening actions upon the heat island urban effect.
- Lower local temperature by 3°C over 30ha and bring cooling in the nearby districts
- Create 13ha of green areas and reinforce the riverside vegetation by 2025
- Restore biodiversity by consolidating the ecological corridors (green and blue)
- Reduce air and noise pollution by developing 5km of soft mobility routes, within a circular economy process
- Design long-term tools for the adaptation to climate change in Toulouse city
Map Perimeter LIFE Green Heart
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Focus : Restoration of degraded soils
The deconstruction of the Exhibition Center and its parking lots will release 10ha of mineralized area. This soil has been sealed during more than 50 years, it’s a “dead” soil which lost its micro-biodiversity.
Rich soils, filled with nutrients and micro-organisms are a prerequisite to biodiversity development and adaptation to climate change of the ecosystem.
Before proceeding with the plantations, an innovative and ecological technique of agronomic recycling of soils is implemented.
A scientific partnership of researchers specialized in soil microbiology, are supporting Toulouse Metropole in designing the scientific protocol. Control plots are experimented to compare various soils’ constructions and identify the best one. The enrichment of the soil, by the provision of carbon and compost for example, allows to get a fertile soil, suitable for the development of its microbiology.
The technique of micro-organisms’ injection is also contemplated to restart the development of life in the soil, if necessary.
So as to reach these objectives while limiting the transport of materials (evacuation of inert materials and provision of topsoil), the sediments and natural earth of the island will be reused in a circular economy approach.
A project implemented in partnership with scientific actors
The Natural History Museum brings its expertise on the evolution of biodiversity that results from the regreening. To do so, professional naturalists are monitoring the biodiversity such as birds, insects, amphibians, reptiles, terrestrial mammals, chiropterans) as well as the flora of the island.
The Meteorological Research National Center is accompanying the project in monitoring local and neighboring temperature.
Eight new monitoring stations are being set up on the island, the Garonne riverside, and in the neighborhood.
WaltR is a Startup born in 2018 specialized in air quality modelling and monitoring.
As part of the LIFE project, it is working on the impacts of the project on air quality evolution on the spot, as well on the whole city of Toulouse. To do so, WaltR set up 5 new measuring stations on the spot, and 5 ultraviolet and infrared cameras in the surroundings of the city center.
The University of Toulouse Jean-Jaures is analyzing the social and economic impacts of the project. This study is focusing on the perceptions of mobility, health, outdoors activities, environment and climate change.
Dussedorf city, twinned with Toulouse, is partner of the project. The size and morphology of the two cities are comparable. Dussedorf is active in the field of urban climate and therefore, very interested in this project. This city also shares its skills in waste material reutilization with Toulouse.
- February - July 2020 : Preparation of the detailed first draft of the park
- Spring - Summer 2020 :
- Implementation of the climate sensors
- Implementation of quality monitoring sensors on the Ramier island and around the city center
- July 2020 - Autumn 2021 : Deconstruction of the Exhibition Center
- Autumn 2021 - Autumn 2022 : Ecological restoration of the soils
- Autumn 2022 : Launching of the first plantations
- 2025 : Delivery of the park
- Project duration : 5 years (1st September 2019 – 1st September 2024)
- Total budget : 3 852 000 € in which 3 175 356 € from Toulouse Métropole Project co-financed by the European Union for 55% of expenses, being a grant amount of 1 735 446 €