Amazonian Dark Earths (ADE) or "terra preta" refers to organic-rich soils which have been documented in many areas within the Amazon rainforest of South America. A type of "super-midden", ADE is essentially a human-created A horizon, or anthrosol, built on top of existing nutrient-poor soils. Scholars debate, to some extent, whether they are the result of deliberate construction, or "anthropogenic", or merely an indirect benefit of living in villages and sharing a garbage dump, "anthropic". It was most likely a little of both.
CITATION STYLE
Sombroek, W., Ruivo, M. D. L., Fearnside, P. M., Glaser, B., & Lehmann, J. (2006). Amazonian Dark Earths as Carbon Stores and Sinks. In Amazonian Dark Earths (pp. 125–139). Kluwer Academic Publishers. https://doi.org/10.1007/1-4020-2597-1_7
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