Sablière Du Lièvre

Sablière Du Lièvre is a small but ecologically valuable directed biological reserve located in the commune of Odomez, in the Hauts-de-France region of France, within the Raismes-Saint-Amand-Wallers state forest in the Nord department. Covering roughly 2.5 hectares, the site occupies a former sand pit and was granted protected status on 16 February 1982 as a botanical reserve.

What is a "sablière" and why does it matter ecologically?

The French word "sablière" means sand pit, referring to a site once used for sand extraction. Places like this, despite originating from human industrial activity, can evolve over decades of natural succession into a mosaic of habitats rarely found in the surrounding, more uniform managed forest. At Sablière Du Lièvre, the abandoned excavation gradually became covered with pioneer vegetation, giving rise to dry sandy slopes, shallow depressions, and transitional zones between open ground and woodland. This variety of microhabitats is the foundation of the site's ecological richness and species diversity.

What is the reserve's purpose and who manages it?

The site holds the status of a directed biological reserve (réserve biologique dirigée), meaning it is not simply left untouched but is actively managed with specific conservation goals in mind — in this case, primarily the botanical and habitat values tied to the former sand pit. The reserve is overseen by the Office National des Forêts (ONF), the French national body responsible for managing public forests, under its Seine Nord territorial department. ONF is responsible for ecological monitoring, any necessary conservation interventions, and maintaining the balance between natural succession and the preservation of open, sun-exposed patches of ground, which are essential for many species adapted to sandy habitats.

Why is this site worth knowing about when visiting the region?

Sablière Du Lièvre is not designed for mass tourism — its small size and protected status mean that nature conservation takes priority over visitor infrastructure. For those interested in botany, ecology, or the way former industrial land can be transformed into valuable natural habitat, however, it offers an interesting example of such a transition. The reserve also forms part of the larger Raismes-Saint-Amand-Wallers forest complex, one of the more significant forested areas in the Nord department, making it a worthwhile point of interest for anyone exploring the surrounding woodland.

Frequently asked questions

Where exactly is Sablière Du Lièvre located? The reserve lies in the commune of Odomez, in the Hauts-de-France region, within the Raismes-Saint-Amand-Wallers state forest.

How large is the reserve? It covers approximately 2.5 hectares.

When was the reserve established? It was granted protected status on 16 February 1982.

Who manages the site? The reserve is managed by the Office National des Forêts (ONF), under its Seine Nord territorial department.

What was the site used for before it became a reserve? The area was formerly a sand pit, a site of sand extraction that, over time, developed into a valuable botanical and ecological reserve.