RENATURATION – A planting experiment has been carried out since the spring on Île Nantes to achieve local reuse of land, which is apparently not very fertile, cleared during construction work.
Debiting plots to plant trees or plants: the idea is now in vogue in large French cities. But it is still necessary not to enrich the impoverished soil by systematically going to look for topsoil in whole trucks several tens (or even hundreds) of kilometers around. This is precisely the mistake that Nantes Métropole does not want to repeat for the creation of future parks that will green the western tip of the island of Nantes. in the process of mutation. Considering that the many earthworks on the island constituted a supply “potential”, the community has been experimenting since the spring with plantings made from excavated soil.
On the site of a former parking lot, near du Solilab, poplars, willows, alders, maples or hazelnuts from the nursery grow on a mixture of sand and clayey silt extracted from a neighboring site. “We added compost, nothing else,” explains Gabriel Mauchamp, landscaper at the agency Osty et associés. We test different mixtures and see what happens. We look at which species are best suited, we measure the quality of the soil, its (…) Read more on 20minutes
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