Tutorial:Terra Preta
From SASSA
SASSA Home Page ⇒ Soils & Sediments Tutorial Home Page ⇒ Anthropogenic Soils, Sediments & Processes ⇒ Terra Preta
[edit] Terra Preta
Terra Preta is a black earth-like anthropogenic soil with enhanced fertility due to high levels of soil organic matter and nutrients such as nitrogen, phosphorus, potassium, and calcium embedded in a landscape of infertile soils. These man made soils occur in the Brazilian Amazon basin and other regions of South America such as Ecuador and Peru but also in Western Africa (Benin, Liberia) and in the savannas of South Africa.
http://www.css.cornell.edu/faculty/lehmann/terra_preta/TerraPretahome.htm
http://www.geo.uni-bayreuth.de/bodenkunde/terra_preta/

