Composición demográfica domiciliaria y dinámica del uso del suelo en Machadinho d’Oeste, Rondônia: evidencias basadas en las etapas iniciales de la frontera
DOI:
https://doi.org/10.20947/S0102-3098a0021Palabras clave:
Machadinho d’Oeste, Amazonia brasileña, Frontera agrícola, Ciclo de vida del hogar, Ciclo de la propiedad, DeforestaciónResumen
Varios estudios sugieren la importancia de los cambios en la composición demográfica domiciliaria sobre la demanda y el uso de la tierra en fronteras agrícolas. La mayoría de esos estudios analiza sin embargo esa relación en etapas más avanzadas del desarrollo de las fronteras, y han producido evidencias conflictivas sobre el papel de los determinantes poblacionales. Este artículo examina los efectos de la composición demográfica del hogar (ciclo de vida domiciliaria) y del tiempo en la propiedad (ciclo en el lote) sobre la dinámica del uso del suelo en pequeñas propiedades rurales en Machadinho d’Oeste, Rondônia. Para ello fueron utilizados datos censales sobre los colonos del proyecto de asentamiento original para los años 1987 y 1995. La relación entre los ciclos y los tipos de uso del suelo fue analizada por
medio de modelos de regresión Beta y de Dirichlet. Se observó una relación consistente entre la oferta de trabajo familiar y el stock deforestado en el nivel de la propiedad rural. El tiempo en la propiedad también aparece asociado a la deforestación, aunque su efecto no linear sugiera la experimentación con el ambiente biofísico local. Se sugiere que el efecto del ciclo de vida y en el lote se determina en las etapas iniciales de la frontera, indicando la importancia de los efectos de la composición demográfica sobre la dinámica del uso de la tierra.
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