Amazonian Dark Earths in Bolivia ? A soil study of anthropogenic ring ditches near Baures (eastern Llanos de Mojos)

Auteur(s) et Affiliation(s)



Description :
The AA. analyse possible links between Amazonian Dark Earths (Terra Preta do Índio) traditionally known from the central Amazon of Brazil and pre-Colombian Earthworks (ring ditches) in the Llanos de Mojos of Bolivia. They also discuss the local inhabitants' perception of soils and scrutinise the importance of soil fertility. Therefore, various methods such as interviews, field surveys, soil profile discussions and laboratory analyses were applied. Results show that soils tend to have particular characteristics at ring ditches in contrast to surrounding areas. The combination of distinctively elevated phosphorus values, darker soil colour and the occurrence of potsherds indicate the presence of the Amazonian Dark Earth type Terra Mulata at ring ditch sites. Interviews reveal that local farmers are aware of the increased soil fertility of Tierras Negras within ring ditches. The AA. finally discuss integrative approaches covering aspects of both physical and social science.


Type de document :
Article de périodique

Source :
Erdkunde, issn : 0014-0015, 2013, vol. 67, n°. 2, p. 137-149, nombre de pages : 13, Références bibliographiques : 2 p.

Date :
2013

Editeur :
Pays édition : Allemagne, Kleve, Boss