Evolution of Land Use in Amazonia During 1940-1995
Leite, Federal University of Viçosa, firstname.lastname@example.org
Costa, Federal University of Viçosa, email@example.com
de Lima, Federal University of Viçosa, firstname.lastname@example.org
Several studies have demonstrated that changes in land cover and land use cause important modifications in the quantity and quality of water resources, in addition to changes in climate. Despite the important relationships among land cover, water resources and climate, there are still relatively few studies that evaluate these relationships, mainly in a long term time scale (several decades), necessary to define the climate or the hydroclimate. One of the reasons for this is the reduced availability of time series of land use. This work presents historical representation of the spatial variability in land use in Amazonia between 1940 and 1995, derived from agricultural census data. The results show the land use proportion in each administrative unit (municipio) of the studied area. The states that present the largest and smallest planted area growth rate of the are the states of Goiás and the Federal District (4,185 km2/year and 25 km2/year, respectively). Between 1975 and 1995 the area of natural pasture in the State of Acre decreased, while the area of planted pasture increased considerably (about 6,380.86 km2). From 1950 to 1995, the area of planted pasture in the State of Goiás increased about 122,047.27 km2 and in the State of Mato Grosso it increased in 151,352.93 km2 in the same period. The State of Mato Grosso also presents the largest increment in the area of cropland, from 565.95 km2 in 1950 to 29,517.46 km2 in 1995.
Science Theme: LC (Land Use and Land Cover Change)