Multitemporal analysis of the use and land cover in island of Maranhao

The process of occupation of the island of Maranhao, has intesified due to the economic, political and social and became worrisome given the fragility of the natural resources to human action. Therefore, the aim of this work was tos study the dymamics of landscape and occupation of physical space-territorial Island in the years of 1984 and 2010 by means of TM/Landsat 5

Study space-temporal of São Luis (Upaon-Açu) Island: Documentation and analysis of landscape and cultural heritage

This work has as its main objective conduct a graphic and visual study of the evolution of the landscape in Sao Luis Island, located in the Department on Maranhao (Brazil). The methodology used is based on a holistic approach to the conception of landscape and subsequent planning of the territory

Multitemporal study of the use and land cover in the municipality of Urbano Santos, Ma

The demographic expansion and industrialization that occurred in Brazil, recently, has induced the urban areas and, of new areas. The multitemporal analysis is possible to evaluate how certain information about this region varies with time. Motoring of land-use and land-cover is important for the study of certain regions, as it contributes for the knowledge of the environmental reality, such as the research regarding solutions for problems that may occur

Uso de Geotecnologias no estudo da expansão agrícola no Estado do Maranhão nos anos de 1999 e 2009

The constant impact of predatory activities of man on natural resources, has brought in several areas of the globe critical levels of environmental degradation. The current expansion of areas for agricultural and pastoral activities is the likely cause of many natural imbalances. In the decade of 90, the municipality Anapurus,MA, as well as its surrounding Buriti, Chapadinha and Brejo, showed a considerable growth of agribusiness monocultor (soybeans and eucalyptus). To form their crops, many farmers cut down the Cerrado. The advent of satellite remote sensing has favored in recent years, carrying out surveys at a distance of physical and chemical changes of the earth's surface in extensive areas and inhospitable, favouring mainly on the maps and seasonal monitoring of the Earth's surface. This research aims to show through data obtained from satellites Landsat TM images of 5, changes in vegetation cover the municipality of Anapurus between the years 1999- 2009, as well as the classification and quantification of the areas interpreted. Was seen a decline in the field of Cerrado an area estimated at 9.675,37 ha in the period between the years 1999 to 2009, and was seen an increase in the Use of the Earth showed that in 1999 an area of approximately 1.715,00 ha in 2009 and rose to 11.406,16 ha (15,91%). In this sense, the geo become an important ally in the study of vegetation cover and use of land.Pages: 6224-622

Distribuição espacial e temporal da cobertura vegetal e uso do solo do município de Anapurus - Ma

The accelerated growth of the agricultural sector experienced in the country has caused negative impacts on land cover, which can be diagnosed by means of appropriate methodologies that allows to measure its magnitude in a particular spatial-temporal area. In this context, the objective of this study was to analyze the evolution of vegetation cover in the city of Anapurus - MA and its relationship with the land use through the LANDSAT satellite images for the recognition of the local agricultural landscape and its evolution Over more than two decades (1987-2011), comprising a database to assist in policy guiding regional development. The satellite images used to identify areas correspond to the orbit / point 220/062, bands 3.4 and 5, and refer to the dates of passage, 15/07/1987, 16/07/1999, 27/07/2009, 15/08/2010 and 05/10/2011. It was found that among the classes of vegetation cover of the wooded savanna was the one that suffered the greatest decrease, from 26,609 ha (43.64%) in 1987 to 6,293 ha in 2011. The average intensity of reduction of area wooded savanna, from 1987 to 1999, was 139.5 ha / year. However, only one year (2010 to 2011) the devastation of this vegetation was severely accelerated, rising to 4,842 ha / year. Rather, the areas of agricultural use increased from 1987 to 2009 a mean intensity of 605.80 ha/year, however, in just one year (2010-2011) it increased sharply to 5496.75 ha/year, can this "boom "is associated with the current economic growth experienced by the country. The reduction of vegetation due to the advancement of areas intended for agricultural use, was about as follows: wooded savanna> Gallery Forest> forest savanna. In a scenario based on the intensity of disappearance of vegetated areas formed by the classes tree savannah, forest savanna and gallery forests, in about ten years, virtually the entire territory of the municipality is occupied, mostly by areas intended for agricultural use.Pages: 7376-738

Estudo da alteração do uso e cobertura do solo no centro oeste maranhense entre os anos de 2000 e 2011

This study aims to analyze the temporal use and land cover between the years 2000 and 2011 in the Municipality of Grajaú-MA, located in the center west of the state, having cerrado vegetation and secondary forest. Using geoprocessing tools that aid through Software 5.0 SPRING worked up LANDSAT satellite images to quantify the entire area of use. What was found was an acceleration in land use. In a margin space of 11 years we can observe a change in the vegetation, which among the different years this vegetation has been replaced by another that would meet the economic needs of man. It was also observed a shift of the peasant to the periphery of the city, which in turn had to cede its space to house vegetation that meets the need of extensive livestock and monoculture. The analysis in question allowed quantifying the data caused by human action in a spatial field and confront the census data collected from other sources, which runs on an accelerated land use of 39.127,31 ha in 2000 to 157.360,79 ha in 2011, a representativeness of 75%, which corresponds to 118.233,48 ha.Pages: 7186-719