Farmland with plastic soil cover Yong Wang/ZumaPress

Salvemos os nossos solos

BERLIM – As Nações Unidas declararam 2015 como o Ano Internacional dos Solos e o período de 19 a 23 de Abril assinala a Semana Mundial dos Solos. Embora estes eventos não sejam particularmente glamorosos, não recebem a atenção que merecem.

Os solos intactos são um recurso inestimável e insubstituível, assegurando inúmeras funções com vista à consecução dos principais objectivos ambientais e de desenvolvimento da comunidade internacional. Actualmente, a necessidade de protegê-los revela-se extremamente urgente.

Solos saudáveis são fundamentais para a alimentação humana e a luta contra a fome. Dependemos deles não só para a produção de alimentos, como também para o desenvolvimento de novas fontes de água potável. Ajudam a regular o clima do planeta, armazenando mais carbono do que o conjunto de todas as florestas do mundo (só os oceanos constituem um sumidouro de carbono maior) e são essenciais para a manutenção da biodiversidade: um punhado de solo fértil contém mais microrganismos do que o número de seres humanos existentes no planeta. Dois terços das espécies do planeta vivem sob a sua superfície.

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