Remote sensing applied to the detection of changes in land use and surface temperature in the Mojuí River watershed

Jéssica Ariana de Jesus Corrêa, Silvia Cristina de Pádua Andrade, Izaura Cristina Nunes Pereira, Thiago César de Sousa Borges, Pauliana Vinhote dos Santos

Abstract


The changes resulting from intensive land use, go beyond the changes in the landscape configuration and the availability of natural resources, also affect the physical and biological properties of the soil, and the energy exchange at the surface interface - atmosphere, occurring through the components the radiation balance, the surface temperature highlighting (Ts) that is highly susceptible to the pattern of land occupation. Mojuí River watershed in western Pará, is embedded in a region of diverse uses and land cover, and comes under pressure due to the expansion of mechanized agriculture and the influence of the dynamics surrounding the BR-163 (Cuiabá-Santarém) where much of the forest cover has been degraded. Thus, the purpose of this study is to analyze the dynamics of land use in the basin of Mojuí River and the surface temperature (Ts) by map land use and land cover and Ts, using this algorithm the SEBAL (Surface Energy Balance Algorithm for Land) and satellite images Landsat 5 - TM, corresponding to the days 02/08/1999 and 29/06/2010, processed in SPRING software. The results showed that the introduction of mechanized agriculture in the region significantly changed the local landscape as well as the expansion of the urban area of the municipality studied. It contacted even if, in addition to changes imposed on vegetation, human activities have caused an imbalance in surface temperature, which showed more areas with higher temperature values due to the increase of areas with exposed soil.

Keywords


use of land; surface temperature; Mojuí River; SEBAL; LANDSAT

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DOI: https://doi.org/10.29150/jhrs.v6i5.22746

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