Fastcompany.com: Making Agriculture Preserve Land, Not Destroy It

Examples in sub-Saharan Africa, Peru, and Colombia demonstrate that merely protecting an ecosystem such as wetlands–if that protection displaces agriculture–may undermine both ecosystems and food production. Farmers can move, removing forests and topsoil elsewhere, eventually destroying yields and degrading ecosystems, according to Matthew McCartney in a related report by the International Water Management Institute, also part of CGIAR.

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Source: www.fastcompany.com