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| Registros recuperados: 12 | |
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| ADAMI, M.; GOMES, A. R.; BELUZZO, A.; COELHO, A. dos S.; VALERIANO, D. de M.; RAMOS, F. de S.; NARVAES, I. da S.; BROWN, I. F.; OLIVEIRA, I. D. de; SANTOS, L. B.; MAURANO, L. E. P.; WATRIN, O. dos S.; GRAÇA, P. M. L. de A.. |
| PRODES is completing almost thirty years of uninterrupted monitoring of clear-cut deforestation over the Brazilian Amazon. Until now, no estimate of its mapping accuracy has been made. In this sense, this article brings a first approximation of mapping accuracy estimation of PRODES deforested areas, taking as example the state of Mato Grosso for the year 2014. For this, a random sampling panel was constructed, stratified with two strata, the deforestation of 2014 and the remaining forest. The sample size was calculated using the binomial function. In addition, a web platform was built to evaluate the points drawn by three independent evaluators. The global accuracy of the mapping of deforestation for the state of Mato Grosso, for the year 2014 was 94.5%,... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Acurácia.; Desmatamento.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085664 |
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| OLIVEIRA, R. R. S. de; SILVA, M. G. L. da; NARVAES, I. da S.; CORDEIRO, T. F.; VALERIANO, D. M.; GOMES, A. R.; ADAMI, M.; FREITAS, L. J. M. de. |
| For the protection of Amazon forest remnants, it is fundamental to know how the processes of forest exploitation occur. In this sense, it is necessary to formulate methodologies that aim at the optimization and accuracy of the mappings related to the selective cutting of forest individuals for commercial purposes. Thus, this work presents the results obtained through the application of the mapping methodology developed in DETEX project, allied to geotechnology and geostatistical methods, aiming at the identification of forest exploitation patterns related to wood selective cutting in COOMFLONA of 2013, 2014 and 2015. According to the results, logging began in 2013 with the installation of storage and infrastructure yards in the north of the area,... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Processamento de imagem; Manejo florestal.; Sensoriamento Remoto.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1075763 |
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| LIMA, I. V. de; SILVA, M. B. da; ADAMI, M.; PINHEIRO, A. F.; BARROS, M. N. R.; NARVAES, I. da S.; GOMES, A. R.; WATRIN, O. dos S.; MAGNO JÚNIOR, P. S. do L.; ROCHA, E. S. da. |
| The municipality of Paragominas is considered a model among the municipalities of the "Legal Amazon", being the inspiration for the program "Municipios verdes", because it was through him and other public policies that the municipality managed to leave the list of municipalities that more Deforested and has been showing an expansion of reforestation practice. This study aims to analyze the dynamics of land use and occupation in the municipality of Paragominas, from 2008 to 2014, with emphasis on reforested areas in the municipality, using maps with land use and land cover data derived from remote sensing and Geoprocessing. The results indicated that although Paragominas faced an apparent consolidated situation in relation to the dynamics of land use, it... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Dinâmica da paisagem; Geotecnologia; Paragominas.; Reflorestamento.; Amazonia.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085676 |
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| PINTO, J. F. S. K. C.; SETZER, A.; MORELLI, F.; GOMES, A. R.; ADAMI, M.; VENTURIERI, A.; GUIMARÃES, T. de F. P. L.. |
| The disordered occupation in the Amazon, the population growth due the National Integration Plan and the lack of new techniques and technologies diffusion for crops management, economically accessible and less aggressiveness to the environment, resulted in the suppression of the natural forest in approximately 25% of the total area Of the Amazon. A factor associated with this suppression, due to its economic viability and local culture, the fire, is used for the conversion of forests to agricultural areas and the maintenance of previously established crops. In order to study this context, the present paper had as objective to identify the classes of land use and cover associated with the fire spots detected by satellites, also indicating burn recurrence... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Queimadas; Uso e Cobertura do Solo; TerraClass; Geoprocessamento. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072670 |
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| CORDEIRO, T. F.; NARVAES, I. da S.; BUCHMANN, H. M.; FREITAS, L. J. M. de; SAMPAIO, S. M. N.; MAIA, J. S.; ADAMI, M.; VALERIANO, D. de M.; GOMES, A. R.; BRIENZA JUNIOR, S.; OLIVEIRA, R. R. S. de; LOPES, M. G.. |
| In the Amazon, the suitable of natural forests is recurring theme in the last years on the world, considering if the same has a huge potential of contribution in products and services. In this context, the reduced impact logging is fundamental in the biodiversity conservation and their forest feedstock sustainable use. Thus, to evaluate a mapping the reduced impact logging in the National forest of Tapajós, Para State, a quantity of information?s and Landsat8 - OLI series merged to orbit-points 227/062 was used to apply in the DETEX methodology (Selective logging Detection), to detect forest exploitation. The results showed significant relationships at use of coherence matrixes of gray levels based on texture characteristics related with remained basal... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Análise textural; Exploração florestal de impacto reduzido; Área basal remanescente; DETEX. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072673 |
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| ALMEIDA, C. A. de; COUTINHO, A. C.; ESQUERDO, J. C. D. M.; ADAMI, M.; VENTURIERI, A.; DINIZ, C. G.; DESSAY, N.; DURIEUX, L.; GOMES, A. R.. |
| Entender o padrão espacial do uso e cobertura da terra é essencial para estudos de biodiversidade, mudanças climáticas e modelagem ambiental, bem como para concepção e acompanhamento de políticas direcionadas ao uso da terra. O objetivo deste estudo foi criar um mapa detalhado do uso e cobertura da terra para a porção desflorestada da Amazônia Legal Brasileira, até 2008. Dados de desflorestamento e uso foram mapeados usando imagens Landsat-5/TM analisadas com técnicas como modelo linear de mistura espectral, fatiamento e interpretação visual, auxiliados por informações temporais de NDVI extraídas de série temporal de dados MODIS. O resultado deste estudo é um mapa de uso e cobertura da terra com alta resolução espacial para toda Amazônia Legal Brasileira,... |
| Tipo: Artigo de periódico |
Palavras-chave: Desflorestamento Tropical; TerraClass; Processamento de Imagens.; Sensoriamento Remoto.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1047910 |
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| ALMEIDA, C. A. de; COUTINHO, A. C.; ESQUERDO, J. C. D. M.; ADAMI, M.; VENTURIERI, A.; DINIZ, C. G.; DESSAY, N.; DURIEUX, L.; GOMES, A. R.. |
| Understanding spatial patterns of land use and land cover is essential for studies addressing biodiversity, climate change and environmental modeling as well as for the design and monitoring of land use policies. The aim of this study was to create a detailed map of land use land cover of the deforested areas of the Brazilian Legal Amazon up to 2008. Deforestation data from and uses were mapped with Landsat-5/TM images analysed with techniques, such as linear spectral mixture model, threshold slicing and visual interpretation, aided by temporal information extracted from NDVI MODIS time series. The result is a high spatial resolution of land use and land cover map of the entire Brazilian Legal Amazon for the year 2008 and corresponding calculation of area... |
| Tipo: Artigo de periódico |
Palavras-chave: Desflorestamento Tropical; TerraClass; Processamento de Imagens.; Sensoriamento Remoto.; Remote sensing; Image analysis; Deforestation. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1047957 |
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| SILVA, M. G. L. da; CORDEIRO, T. F.; OLIVEIRA, R. R. S. de; NARVAES, I. da S.; GOMES, A. R.; ADAMI, M.; FREITAS, L. J. M. de; VALERIANO, D. de M.. |
| The Amazon Biome has a wide variety of ecosystems, such as: flooded forests, dry land, igapós, open fields, floodplains and cerrado. And for forest studies what has been used in the scientific field are several methods of satellites images classification based on textural characteristics. The texture characteristics are an important source of information for the analysis and interpretation process of products that are generated by optical sensors. In this work we show results obtained through the application of the mapping methodology developed by DETEX (Detection of Selective Logging) and the textural measures using a co-occurrence matrix, in the study area of FNT (Tapajós National Forest) in Pará, having as a temporal cut the years of 2014, before the... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Processamento de imagens.; Sensoriamento Remoto; Textura.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072677 |
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| OLIVEIRA, A. H. M.; ADAMI, M.; GOMES, A. R.; AMARAL, S.; MARTORANO, L. G.; NARVAES, I. da S.; BARROS, M. N. R.; MACIEL, M. de N. M.. |
| This paper analyzes the transition process of land use and land cover classes in the Tapajós area of endemism (AE) from 2004 to 2012. Using data from mapping carried out by the TerraClass project, and based on transition matrices, vulnerability, land usage and coverage were estimated. From the detailed transition matrix, we calculated net changes, gains, losses, persistence and, we can identify the vulnerability and the integrity of these classes. The Forest class was most sensitive to the changes and most fragile and susceptible to transitions. The Secondary Vegetation class presented high values of net persistence and the Class of Annual Agriculture presented high persistence. The Pasture class presented high susceptibility to loss of area to other... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Uso e cobertura da terra; Matriz de transição.; Sensoriamento Remoto.; Amazonia.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072678 |
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| OLIVEIRA, R. R. S. de; VENTURIERI, A.; BELLUZZO, A. P.; GOMES, A. R.; PINTO, J. F. S. K. C.. |
| A natureza está em constante transformação, onde os processos e fenômenos ocorrem instantaneamente, em busca de se alcançar a homeostasia, ou seja, uma estabilidade do sistema [aberto] mediante a interação de múltiplos fatores e agentes que interagem em um equilíbrio dinâmico, por estarem correlacionados. Onde cada elemento, passivo ou ativo na dinâmica do meio exerce um papel essencial. Esta teia de processos ocorre, em sua maioria, de forma sincronizada e harmônica. No entanto, o homem enquanto agente ativo na natureza tem um grande potencial para a alteração desses processos e transformação da paisagem... |
| Tipo: Separatas |
Palavras-chave: Geoprocessamento; Microbacias hidrográficas; Vulnerabilidade; Zoneamento; Pará.; Erosão; Morfogênese.. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/962539 |
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| Registros recuperados: 12 | |
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