@Article{EspindolaAguPebCamFon:2012:AgLaUs,
author = "Espindola, Giovana Mira de and Aguiar, Ana Paula Dutra de and
Pebesma, E. and Cam{\^a}ra, Gilberto and Fonseca, L.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Agricultural land use dynamics in the Brazilian Amazon based on
remote sensing and census data",
journal = "Applied Geography",
year = "2012",
volume = "32",
number = "2",
pages = "240--252",
month = "Mar.",
keywords = "Brazilian Amazon, Deforestation, Land use dynamic, Agricultural
land uses, Spatial regression analysis.",
abstract = "The potential impact of deforestation in the Brazilian Amazon on
greenhouse gas emissions to the atmosphere calls for policies that
take account of changes in forest cover. Although much research
has focused on the location and effects of deforestation, little
is known about the distribution and reasons for the agricultural
uses that replace forest cover. We used Landsat TM-based
deforestation and agricultural census data to generate maps of the
distribution and proportion of four major agricultural land uses
throughout the Brazilian Amazon in 1997 and 2007. We built linear
and spatial regression models to assess the determinant factors of
deforestation and those major agricultural land uses e pasture,
temporary agriculture and permanent agriculture e for the states
of Par{\'a}, Rond{\^o}nia, and Mato Grosso. The data include 30
determinant factors that were grouped into two years (1996 and
2006) and in four categories: accessibility to markets, public
policies, agrarian structure, and environment. We found an overall
expansion of the total agricultural area between 1997 and 2007,
and notable differences between the states of Par{\'a},
Rond{\^o}nia, and Mato Grosso in land use changes during this
period. Regression models for deforestation and pasture indicated
that determinant factors such as distance to roads were more
influential in 1997 than in 2007. The number of settled families
played an important role in the deforestation and pasture, the
effect was stronger in 2007 than 1997. Indigenous lands were
significant in preventing deforestation in high-pressure areas in
2007. For temporary and permanent agricultures, our results show
that in 1997 the effect of small farms was stronger than in 2007.
The mapped land use time series and the models explain empirically
the effects of land use changes across the region over one
decade.",
doi = "10.1016/j.apgeog.2011.04.003",
url = "http://dx.doi.org/10.1016/j.apgeog.2011.04.003",
issn = "0143-6228",
language = "en",
urlaccessdate = "11 maio 2024"
}