Biocombustíveis, controvérsia agrícola na economia do petróleo: o caso do etanol no Cerrado / .

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

16/09/2009

RESUMO

In the controversial debate about the impacts of biofuels, Brazil has been trying to sustain a supposed immunity. The argument rests on the extraordinary abundance of degraded grazing land, sufficiently capable of accommodating the expansion of sugarcane without threatening food security or compromising the integrity of ecosystems. Although the enormous advantages in domestic technologies, sugarcane energy balance, ethanol prices and markets, this Ph.D. theses showed, crossing information obtained by local interviews and satellite images, that in the last 1,5 years on southern-west Goiás, the cane activities expanded on grain crops (63%), pasturelands (33%) and (5%) savannas of total 62.420 hectares. Soil fertility, distance and roads conditions to access ethanol mills, favorable topography, expects outputs and contracts opportunities are the main attributes that explain local sugarcane expansion. The impacts on rural mosaics are describe as competition between energy and food, once a large part of the agriculture replaced by sugarcane consists of soybean, which expand itself to marginal lands or Legal Amazon. Other land use change is Local Cerrado deforestation, specifically when contiguous within pasturelands. Further, the impact of replacing grazing land by sugar cane for which the extent of degraded grazing we are unable to estimate reverberate in the Amazon region, thickening the agricultural frontier with 65 thousands cattle expelled by ethanol doesnt compromising food security or the integrity of ecosystems, at least in regional scale.

ASSUNTO(S)

. biocombustíveis cerrado. economia do petróleo etanol

ACESSO AO ARTIGO

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