Un rapport du PNUE met en garde contre le dilemme de l'extraction mondiale de sable

25 mai 2026

Rapporté par l'IA

Le Programme des Nations unies pour l'environnement a publié un rapport en mai 2026 sur la durabilité du sable lors d'une présentation à Genève.

Les entreprises extraient chaque année environ 50 milliards de tonnes de sable et de gravier pour la construction et l'industrie. Pascal Peduzzi, responsable au PNUE, a souligné que ce volume pourrait former un mur de 27 mètres de haut et de large tout autour de l'équateur.

Le sable assure une filtration naturelle de l'eau et protège les côtes tout en soutenant divers écosystèmes. Le rapport indique que la masse de l'environnement bâti a dépassé la biomasse vivante d'ici 2020, le sable et le gravier représentant près de 90 pour cent de ce total.

L'agence a appelé à une meilleure gouvernance et à des approches d'économie circulaire. La demande dans le seul secteur de la construction pourrait augmenter de 45 pour cent d'ici 2060 si les tendances actuelles se poursuivent.

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mercredi 27 mai 2026 11h34

Un rapport du PNUE met en garde contre le dilemme de l'extraction mondiale de sable

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