Farmland with plastic soil cover Yong Wang/ZumaPress

Sauvons nos sols

BERLIN – L’Organisation des Nations Unies a fait de 2015 l’Année internationale des sols, la période du 19 au 23 avril ayant été déclarée Semaine mondiale des Sols. Bien qu’il ne s’agisse pas d’événements particulièrement glamour, on ne peut que regretter qu’ils ne suscitent pas l’attention que nous devrions leur accorder.

Les sols intacts de la planète constituent une ressource précieuse et irremplaçable, assurant une multitude de fonctions dans l’accomplissement des principaux objectifs environnementaux et de développement de la communauté internationale. La nécessité de leur préservation se révèle actuellement extrêmement urgente.

Les sols sains sont indispensables à l’alimentation humaine et au combat contre la faim. Nous en sommes dépendants non seulement dans le cadre de la production alimentaire, mais également dans le développement de nouvelles sources d’eau potable. Ces sols contribuent à réguler le climat de notre planète, stockant davantage de CO2 que toutes les forêts du monde combinées (seuls les océans constituent un puits de carbone plus significatif), et sont essentiels au maintien de la biodiversité : une poignée de terre fertile abrite davantage de micro-organismes qu’il existe d’êtres humains sur la planète. Pas moins de deux tiers des espèces vivantes de la Terre vivent sous sa surface.

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