Download e-book for iPad: Amazonian Dark Earths: Origin, Properties, Management by Johannes Lehmann, Dirse C. Kern, Bruno Glaser, William I.

By Johannes Lehmann, Dirse C. Kern, Bruno Glaser, William I. Woods

ISBN-10: 1402018398

ISBN-13: 9781402018398

ISBN-10: 1402025971

ISBN-13: 9781402025976

Darkish Earths are a testomony to vanished civilizations of the Amazon Basin, yet can also solution how huge societies might maintain extensive agriculture in an atmosphere of infertile soils. This e-book examines their starting place, homes, and administration. Questions stay: have been they deliberately produced or a spinoff of habitation. extra new and multidisciplinary views by way of top specialists could pave the best way for the subsequent revolution in soil administration within the humid tropics.

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Extra info for Amazonian Dark Earths: Origin, Properties, Management

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Instead, a state of nature prevailed. Seeing the bounteous growth of the forests, nineteenth century naturalists celebrated the fertility of the soils thus sowing the seeds for the disastrous application of temperate farming methods in the tropics. Caboclos, living close to the land, rediscovered the Dark Earth soils of their ancestors, recognized their superiority, and sought them out. Finally, scientists seem to be catching up. REFERENCES Acuña, C. (1942). Nuevo Descubrimiento del Gran Río del Amazonas, second edition.

2001). And, Lake Tefé is said to have had large indigenous populations in the seventeenth century (Acuña, 1942). Without rich alluvial soils, long-term agriculture may have been entirely dependent upon Dark Earth (ADE) technology. 3. PRE-EUROPEAN RIVERINE SETTLEMENT AND CULTIVATION The prevailing image of pre-European cultivation in upland Amazonian forests (terra firme) is that of shifting cultivation with periods of short cropping and long fallowing. This is the dominant pattern for both native peoples and settlers today.

It is against a background of resource abundance and ecological diversity that the history of these societies must be understood. , 1996). The occurrence of semi-polished stone axes documents that some form of forest clearing and management took place as early as 8,000 years BP in the broad region (Gnecco and Mora, 1997; Oliver, 2001). Forest clearing in the hinterland also reportedly took place during this time (Magalhães, 1994; Miller, 1992). Once forest clearing began and different economies were developed, Amazonian landscapes and the people that occupied them became thoroughly intertwined.

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Amazonian Dark Earths: Origin, Properties, Management by Johannes Lehmann, Dirse C. Kern, Bruno Glaser, William I. Woods

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