Topsoil's limited turnover: A crisis in time
Geplaatst: do 02 okt 2008, 19:11
Topsoil does not last forever. Records show that topsoil erosion, accelerated by human civilization and conventional agricultural practices, has outpaced long-term soil production. Earth's continents are losing prime agricultural soils even as population growth and increased demand for biofuels claim more from this basic resource.
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