Análise da relação entre o desflorestamento e a atividade agropecuária no Estado do Mato Grosso / An analysis of the relationship between deforestation and agricultural activities in the state of Mato Grosso

AUTOR(ES)

José Constantino Silveira Júnior

DATA DE PUBLICAÇÃO

2002

RESUMO

Deforestation in the tropics is commonly associated to population increase and poverty. Deforestation in Brazilian Amazonia has been monitored in an annual scale, revealing annual deforestation rates in the range of 1-3 million hectares per year and a total deforested area of approximately 60 million hectares in the beginning of the XXI century. Nonetheless, integrated studies linking data from deforestation survey and agricultural activity appear seldom in the literature. This work intends to address this issue, by analyzing the relationship between the spread of the deforested area and the intensity agricultural activity in the municipalities of the State of Mato Grosso during the 1991-1997 period. Deforestation data were obtained from INPE´s PRODES data base and agricultural activity data were obtained from census surveys conducted by IBGE, although some restrictions in these data limited the analysis to cattle increase and total crop area. Results show that cattle density averaged 0.69 animals/ha varying between 0.26 and 1.51 animals/ha among the municipalities. The relationship between cattle increase and deforestation rates suggests a scenario of pasture intensification in several regions, leading to increasing cattle density. At the same time, annual crops represent important fractions of land use in certain areas. In general, results suggest that deforestation is associated to land use intensification and, in some cases, to the establishment of production systems based on intensive agriculture, repeating the same scenario of agricultural expansion that took place in the Brazilian Center-South.

ASSUNTO(S)

cattle sistemas de informação geográfica desmatamento análise espacial sensoriamento remoto geographic information systems mato grosso (estado) forests uso da terra deforestation agriculture land use pecuária space analysis agricultura amazon region (south america) remote sensing florestas amazônia

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