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MODIS Time Series to Detect Anthropogenic Interventions and Degradation Processes in Tropical Pasture. Repositório Alice
AGUIAR, D. A.; MELLO, M. P.; NOGUEIRA, S. F.; GONÇALVES, F. G.; ADAMI, M.; RUDORFF, B. F. T..
The unavoidable diet change in emerging countries, projected for the coming years, will significantly increase the global consumption of animal protein. It is expected that Brazilian livestock production, responsible for close to 15% of global production, be prepared to answer to the increasing demand of beef. Consequently, the evaluation of pasture quality at regional scale is important to inform public policies towards a rational land use strategy directed to improve livestock productivity in the country. Our hypothesis is that MODIS images can be used to evaluate the processes of degradation, restoration and renovation of tropical pastures. To test this hypothesis, two field campaigns were performed covering a route of approximately 40,000 km through...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: EVI2 time series; Biophysical parameters; Phenological metrics; Biological degradation; Pasture reformation; Parâmetros biofísicos; Métricas fenológicas; Degradação biológica; Reforma de pastagens; Renovação de pastagens; Recuperação de pastagem.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1060956
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TOPOGRAPHIC ASPECTS IN THE SPATIAL AND TEMPORAL DYNAMIC OF NET RADIATION REA
Filgueiras,Roberto; Nicolete,Donizeti A. P.; Carvalho,Tânia M. de; Cunha,Antonio R. da; Zimback,Célia R. L..
ABSTRACT: The measurements obtained by remote sensing are influenced by issues related to relief. Based on that, this paper aims to analyze the spatial and temporal dynamics of the net radiation (Rn), considering the influence of topographic parameters on it, in Edgárdia Experimental Farm (FEE). It was used the methodology based on the SEBAL algorithm (Surface Energy Balance Algorithm for Land) to estimate the net radiation by orbital images. In order to assess the topographic influence on the computing of net radiation, three methodologies were applied: without topographic correction (RnSem), cosine correction (RnCos) and C correction (RnC). These methodologies were applied on 21 images of the orbital platform Landsat-5/TM, from 1985 up to 2010. Due to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Topographic correction; SEBAL; Biophysical parameters.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000501028
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