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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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| GOERGEN, Ç L. C. de G.; KILCA, R. de V.; NARVAES, I. da S.; SILVA, M. N.; SILVA, E. A.; PEREIRA, R. S. P.; ADAMI, M.. |
| O objetivo deste trabalho foi avaliar a utilização de imagens do sensor TM/Landsat 5 na diferenciação de plantios comerciais de Eucalyptus dunnii e Eucalyptus urograndis com diferentes idades. Demarcaram-se parcelas para identificar as duas espécies, em dois períodos distintos (2009 e 2011), a idades de 3 e 5anos, para E.dunnii, e 2,2 e 4,2 anos para E. urograndis. Avaliaram-se seis bandas do sensor TM/Landsat5 (B1, B2, B3, B4, B5 e B7) e seis índices de vegetação: razão simples (SR); índice de vegetação por diferença normalizada (NDVI); índice de vegetação ajustado ao solo (Savi)-0,25; Savi-0,5; índice de vegetação por diferença normalizada com uso da banda verde (GNDVI); e índice de umidade na vegetação (MVI). O processamento digital das imagens... |
| Tipo: Artigo de periódico |
Palavras-chave: Spectral signature; Análise de componente principal; Plantio florestal; Eucalipto; Eucalyptus; Principal component analysis; Forest plantations. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1040610 |
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| NARVAES, I. da S.; PORRO, R.; CORDEIRO, T. F.; ELLERES, F. A. P.; SAMPAIO, S. M. N.; WATRIN, O. dos S.. |
| A pressão por áreas florestais a serem exploradas é constante na Amazônia. Projetos de Desenvolvimento Sustentável (PDS) constituem uma modalidade de assentamento rural com objetivos sociais e ambientais, tendo o manejo florestal sustentável como alternativa para geração de renda. Utilizando a metodologia de ?Detecção de exploração madeireira em tempo quase real? (DETEX), desenvolvida pelo Instituto Nacional de Pesquisas Espaciais (INPE), este estudo analisou a ocorrência de exploração florestal licenciada e não autorizada no PDS Virola-Jatobá (PDS-VJ), município de Anapu, Pará, no período de 1999 a 2016. Foram identificadas alterações não autorizadas em 18.519 ha, sendo que 92% desta alteração ocorreram anteriormente a 2004, quando houve o assentamento... |
| Tipo: Artigo de periódico |
Palavras-chave: Projetos de Desenvolvimento Sustentável; Geotecnologias; Manejo florestal comunitário; Análise multitemporal; Projeto DETEX; Assentamento; Reforma Agrária; Manejo; Amazonia. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131786 |
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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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| 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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| SANO, E. E.; ROSA, R.; SCARAMUZZA, C. A. de M.; ADAMI, M.; BOLFE, E. L.; COUTINHO, A. C.; ESQUERDO, J. C. D. M.; MAURANO, L. E. P.; NARVAES, I. da S.; OLIVEIRA FILHO, F. J. B. de; SILVA, E. B. da; VICTORIA, D. de C.; FERREIRA, L. G.; BRITO, J. L. S.; BAYMA, A. P.; OLIVEIRA, G. H. de O.; SILVA, G. B. S. da. |
| The objective of this work was to analyze land use dynamics in the Brazilian Cerrado region from 2002 to 2013. This analysis was based on the interpretation of Landsat satellite images carried out by the projects Projeto de Conservação e Utilização Sustentável da Diversidade Biológica Brasileira (Probio) and TerraClass Cerrado 2013, both coordinated by Ministério do Meio Ambiente. In 2002, 38.9% of the Cerrado was covered by some type of anthropic activity. In 2013, this percentage increased to 43.4%. One of the main highlights is the emergence of a new agricultural frontier in the northern region of the study area, known as Matopiba. |
| Tipo: Artigo de periódico |
Palavras-chave: Probio; TerraClass Cerrado; Sensoriamento Remoto; Landsat; Remote sensing. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108874 |
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| SCARAMUZZA, C. A. de M.; SANO, E. E.; ADAMI, M.; BOLFE, E. L.; COUTINHO, A. C.; ESQUERDO, J. C. D. M.; MAURANO, L. E. P.; NARVAES, I. da S.; OLIVEIRA FILHO, F. J. B. de; ROSA, R.; SILVA, E. B. da; VALERIANO, D. de M.; VICTORIA, D. de C.; BAYMA, A. P.; OLIVEIRA, G. H. de; SILVA, G. B. S. da. |
| The Brazilian Cerrado is one of the world´s biodiversity hotspot and hosts some of the most intensive agricultural activities for food production in the world. The objective of this study was to produce a land-use and land-cover (LULC) map of the Cerrado based on Landsat-8 Operational Land Imager (OLI) images. A set of 121 scenes from 2013 was processed using the image segmentation technique. The segments were exported in the shapefile format and interpreted visually in a geographical information system software using RGB/564 color composites. The following LULC classes were considered: annual croplands, perennial croplands, cultivated pasturelands, reforestation, mosaic of occupation, urban areas, mining areas, bare soil, forestlands, non-forestlands,... |
| Tipo: Artigo de periódico |
Palavras-chave: Savana tropical; Uso da cobertura; Ocupação da terra; Sensoriamento remoto; Uso da terra; Cerrado; Remote sensing; Land cover; Land use. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1089343 |
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| SCARAMUZZA, C. A. de M.; SANO, E. E.; ADAMI, M.; BOLFE, E. L.; COUTINHO, A. C.; ESQUERDO, J. C. D. M.; MAURANO, L. E. P.; NARVAES, I. da S.; OLIVEIRA FILHO, F. J. B. de; ROSA, R.; SILVA, E. B. da; VALERIANO, D. de M.; VICTORIA, D. de C.; BAYMA, A. P.; OLIVEIRA, G. H. de; SILVA, G. B. S. da. |
| The Brazilian Cerrado is one of the world´s biodiversity hotspot and hosts some of the most intensive agricultural activities for food production in the world. The objective of this study was to produce a land-use and land-cover (LULC) map of the Cerrado based on Landsat-8 Operational Land Imager (OLI) images. A set of 121 scenes from 2013 was processed using the image segmentation technique. The segments were exported in the shapefile format and interpreted visually in a geographical information system software using RGB/564 color composites. The following LULC classes were considered: annual croplands, perennial croplands, cultivated pasturelands, reforestation, mosaic of occupation, urban areas, mining areas, bare soil, forestlands, non-forestlands,... |
| Tipo: Artigo de periódico |
Palavras-chave: Savana tropical; Uso da cobertura; Ocupação da terra; Sensoriamento remoto; Uso da terra; Cerrado; Remote sensing; Land cover; Land use. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1090969 |
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| TRITSCH, I.; SIST, P.; NARVAES, I. da S.; FREITAS, L. J. M. de; BLANC, L.; BOURGOIN, C.; CORNU, G.; GOND, V.. |
| In the Brazilian Amazon, multiple logging activities are undergoing, involving different actors and interests. They shape a disturbance gradient bound to the intensity and frequency of logging, and forest management techniques. However, until now, few studies have been carried out at the landscape scale taking into account these multiple types of logging and this disturbance gradient. Here we address this issue of how to account for the multiple logging activities shaping the current forest landscape. We developed an inexpensive and efficient remote sensing methodology based on Landsat imagery to detect and track logging activity based on the monitoring of canopy openings. Then, we implemented a set of remote sensing indicators to follow the different... |
| Tipo: Separatas |
Palavras-chave: Degradação florestal; Impactos de exploração madeireira; Padrões de perturbação; Indicadores espaciais e temporais; Paisagem florestal.; Sensoriamento Remoto.; Amazonia.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064421 |
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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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| Registros recuperados: 12 | |
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