Abstract
The increasing use of natural resources in a disorderly way has been demanding constant monitoring and ecological-economic zoning. The knowledge on land use and cover allows that measures that guarantee the preservation, maintenance of the environment and space management be appropriate to the reality, since through these factors it is possible to follow the probable environmental impacts and the socioeconomic development of a place in several contexts. The Geographical Information System (GIS) and remote sensing techniques have been applied to land use and land cover mapping. This study aimed to analyze the conversion of land use from different perspectives, concerning geoprocessing techniques, in the southeastern of Roraima State, Brazil, in two distinct periods. In order to verify the land use and cover, two analyses were conducted, using the Spring and TerraView softwares. Great part of the cultivated areas was converted into capoeira, what probably denotes an ending of profitable agriculture, as well as its abandonment caused by the nutritional deficiency of the soil, that became inappropriate for cultivation in the subsequent years. A fuzzy logic would possibly fit well to the types of data analyzed, because the attribute query is overly complex.
Highlights
The increasing exploitation of natural resources in a disorderly way has been demanding constant monitoring of its status and occupation mode by inspection and ecologic-economic zoning (Duarte et al 1999)
The methodology applied proved to be useful for monitoring land use and land use change
There was a considerable increase in land use and occupation for agriculture and clear pasture
Summary
The increasing exploitation of natural resources in a disorderly way has been demanding constant monitoring of its status and occupation mode by inspection and ecologic-economic zoning (Duarte et al 1999). A focused area for these procedures is the Amazon, described by Becker (2005) as the largest existing portion of tropical forest in the world. This biome has been suffering intense modification since 1970, due to rural occupations which modified the landscape with the deforestation of millions of hectares for pastures, colonization projects and agrarian reform (Alves et al 2001), so that, in 2004, it was recorded the second highest rate of deforestation, with 26,130 km (Barreto et al 2005). The land use change found in this region can be attributed to land use differentiation and property structure (Castro 2005)
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