A coleta de informações biofísicas da vegetação é crucial para analisar as suas características e seu comportamento nos ambientes florestais. Uma das formas se obter essas pode ser realizada utilizando técnicas sensoriamento remoto, o qual permite espacial temporalmente os componentes superfície terrestre, entre eles diferentes características. Sendo assim, objetivo do estudo foi a condição híd...

Remote sensing is a promising technique for monitoring the distribution and dynamics of various vector-borne diseases. In this study, we used the multi-temporal CBERS images, obtained free of charge, to predict the habitats of the snail Oncomelania hupensis, the sole intermediate host of schistosomiasis japonica, a snail-borne parasitic disease of considerable public health in China. Areas of s...

In this work, we aim to evaluate the feasibility and operational limitations of using Sentinel-1 synthetic aperture radar (SAR) data monitor water levels in Poço da Cruz reservoir from September 2016–September 2020, semi-arid region northeast Brazil. To segment water/non-water features, SAR backscattering thresholding was carried out via graphical interpretation backscatter coefficient histogra...

O sensoriamento remoto, por meio das técnicas de razão bandas para o monitoramento nutricional plantios clonais eucalipto, é fundamental garantir a sanidade, produtividade e reduzir custos empreendimentos florestais. Objetivou-se aplicar índices vegetação partir imagens satélite alta resolução na diagnose macronutrientes em híbridos Eucalyptus urophylla S. T. Blake. estudo foi realizado 62 área...

The article presents the analysis of widespread spectral indexes results Earth remote sensing data thematic processing to reveal most representative one for applying under conditions critical increase groundwater level and salinity as well salinized soil. Long-term monitoring multispectral images LandSat-8 satellite were collected Golodnostepsky irrigation land. Sites with disturbing ameliorati...

This research deals with the characterization of areas associated with flash floods and erosion caused by severe rainfall storm and sediment transport and accumulation using topographic attributes and profiles, spectral indices (SI), and principal component analysis (PCA). To achieve our objectives, topographic attributes and profiles were retrieved from ASTER-V2 DEM. PCA and nine SI were deriv...

Harmful cyanobacterial blooms have been one of the most challenging ecological problems faced by freshwater bodies for more than a century. The use satellite images as tool to analyze these is an innovative technology that will facilitate water governance and help develop measures guarantee security. To assess viability Sentinel-2 identifying chlorophyl-a, different bands were considered, those...

Abstract GIS and remote sensing techniques are widely used to detect analyze vegetation changes because of their accuracy effectiveness as well low cost. Among the various spectral indicators derived from satellite data (Landsat data) (NDWI - IPVI NDVI) applied model variation in ecosystems behavior study area, pretreatment geometric corrections were performed using Arc 10.2.2, The results (NDV...