La pluviométrie : un déterminant des pratiques culturales au Mato Grosso.

Abstract : Soybean farmers in the State of Mato Grosso, in Brazilian Amazonia, are directing their activities toward agricultural intensification, by planting two successive harvests (soybean and cotton or corn) during the rainy season. However, the adoption of such intensified management practices suffers from a strong regional variability. The objective of this paper is to demonstrate that rainfall represents a main driver for the adoption of double cropping systems. On the one hand, TRMM 3B42 precipitation products allowed us to map rainfall regimes in Mato Grosso by measuring four parameters of the rainy season: annual mean, onset, duration and end. On the other hand, land use maps resulting from classifications of MODIS TERRA/EVI time series allowed us to detect agricultural agricultural management practices. Both maps were then crossed and CHI-2 tests used to confirm a statistical dependency between rainfalls and the level of agricultural intensification.
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Submitted on : Saturday, October 16, 2010 - 1:34:57 PM
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  • HAL Id : halshs-00526875, version 1


Damien Arvor, Vincent Dubreuil, Margareth Simões Penello Meirelles. La pluviométrie : un déterminant des pratiques culturales au Mato Grosso.. Risques et changement climatique, Sep 2010, Rennes, France. pp.53-58. ⟨halshs-00526875⟩



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