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Registro Completo |
Biblioteca(s): |
Embrapa Territorial. |
Data corrente: |
04/10/2011 |
Data da última atualização: |
03/05/2019 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
BEUCHLE, R.; EVA, H. D.; MIRANDA, E. E. de; HOLLER, W. A.; OSHIRO, O. T.; ACHARD, F. |
Afiliação: |
RENÉ BEUCHLE, JOINT RESEARCH CENTRE OF THE EUROPEAN COMMISSION; HUGH DOUGLAS EVA, JOINT RESEARCH CENTRE OF THE EUROPEAN COMMISSION; EVARISTO EDUARDO DE MIRANDA, CNPM; WILSON ANDERSON HOLLER, CNPM; OSVALDO TADATOMO OSHIRO, CNPM; FRÉDERIC ACHARD, JOINT RESEARCH CENTRE OF THE EUROPEAN COMMISSION. |
Título: |
Global tropical forest cover change assessment with medium spatial stellite imagery using a systematic sample grid - data, methods and first results. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 15., 2011, Curitiba. Anais... São José dos Campos: INPE, 2011. |
Páginas: |
p. 2981-2988. |
Idioma: |
Português |
Conteúdo: |
At the Joint Research Centre (JRC) of the European Commission, a methodology has been developed to monitor the pan-tropical forest cover with remote sensing data for the years 1990-2000-2005 in Latin America, Southeast Asia and Africa on the basis of over 4000 sample units sample units with a dimension of 20 km by 20 km located at every full latitude and longitude degree confluence. From the Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM) instruments, images with low cloud impact from the epochs around the years 1990, 2000 and 2005 were selected and subsets covering the sample units were cut-out, pre-processed, segmented and classified in five different land cover classes in order to build global and regional statistics on tropical forest cover change. The data was validated in three steps, internal correction of wrongly classified objects, external (national or regional) expert validation and internal harmonization of the data. In this paper, the data collection and the workflow of the forest cover change assessment for the epochs 1990 and 2000 is presented. Parts of the results for the Brazilian Amazon have been validated by comparing with interpretations of corresponding samples carried out by the Instituto Nacional de Pesquisas Espaciais (INPE), showing a very high correlation. Further, the figure produced by INPE through the PRODES program on gross deforestation for the years 1990-2000 was compared to the figure calculated on basis of the JRC results for the respective area, where the JRC estimate that was ca. 10% higher than the INPE estimate. MenosAt the Joint Research Centre (JRC) of the European Commission, a methodology has been developed to monitor the pan-tropical forest cover with remote sensing data for the years 1990-2000-2005 in Latin America, Southeast Asia and Africa on the basis of over 4000 sample units sample units with a dimension of 20 km by 20 km located at every full latitude and longitude degree confluence. From the Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM) instruments, images with low cloud impact from the epochs around the years 1990, 2000 and 2005 were selected and subsets covering the sample units were cut-out, pre-processed, segmented and classified in five different land cover classes in order to build global and regional statistics on tropical forest cover change. The data was validated in three steps, internal correction of wrongly classified objects, external (national or regional) expert validation and internal harmonization of the data. In this paper, the data collection and the workflow of the forest cover change assessment for the epochs 1990 and 2000 is presented. Parts of the results for the Brazilian Amazon have been validated by comparing with interpretations of corresponding samples carried out by the Instituto Nacional de Pesquisas Espaciais (INPE), showing a very high correlation. Further, the figure produced by INPE through the PRODES program on gross deforestation for the years 1990-2000 was compared to the figure calculated on basis of the JRC results for... Mostrar Tudo |
Palavras-Chave: |
Object-based classification; Tropical forest cover. |
Thesaurus Nal: |
Landsat; monitoring. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42854/1/Miranda-SBSR.pdf
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Marc: |
LEADER 02365nam a2200229 a 4500 001 1902317 005 2019-05-03 008 2011 bl uuuu u00u1 u #d 100 1 $aBEUCHLE, R. 245 $aGlobal tropical forest cover change assessment with medium spatial stellite imagery using a systematic sample grid - data, methods and first results. 260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 15., 2011, Curitiba. Anais... São José dos Campos: INPE$c2011 300 $ap. 2981-2988. 520 $aAt the Joint Research Centre (JRC) of the European Commission, a methodology has been developed to monitor the pan-tropical forest cover with remote sensing data for the years 1990-2000-2005 in Latin America, Southeast Asia and Africa on the basis of over 4000 sample units sample units with a dimension of 20 km by 20 km located at every full latitude and longitude degree confluence. From the Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM) instruments, images with low cloud impact from the epochs around the years 1990, 2000 and 2005 were selected and subsets covering the sample units were cut-out, pre-processed, segmented and classified in five different land cover classes in order to build global and regional statistics on tropical forest cover change. The data was validated in three steps, internal correction of wrongly classified objects, external (national or regional) expert validation and internal harmonization of the data. In this paper, the data collection and the workflow of the forest cover change assessment for the epochs 1990 and 2000 is presented. Parts of the results for the Brazilian Amazon have been validated by comparing with interpretations of corresponding samples carried out by the Instituto Nacional de Pesquisas Espaciais (INPE), showing a very high correlation. Further, the figure produced by INPE through the PRODES program on gross deforestation for the years 1990-2000 was compared to the figure calculated on basis of the JRC results for the respective area, where the JRC estimate that was ca. 10% higher than the INPE estimate. 650 $aLandsat 650 $amonitoring 653 $aObject-based classification 653 $aTropical forest cover 700 1 $aEVA, H. D. 700 1 $aMIRANDA, E. E. de 700 1 $aHOLLER, W. A. 700 1 $aOSHIRO, O. T. 700 1 $aACHARD, F.
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Registro original: |
Embrapa Territorial (CNPM) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
24/07/2018 |
Data da última atualização: |
15/03/2019 |
Tipo da produção científica: |
Documentos |
Autoria: |
MELO, M. L. A. de; ANDRADE, C. de L. T. de; RIOS, S. de A.; FAVARIN, A. M.; VASCONCELLOS, J. H. |
Afiliação: |
Marina Luciana Abreu de Melo, Mestranda em Agronomia; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS; SARA DE ALMEIDA RIOS, CNPMS; AURELIO MARTINS FAVARIN, CNPMS; JOSE HEITOR VASCONCELLOS, CNPMS. |
Título: |
Perfil de usuários de tecnologias para a agricultura irrigada. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2018. |
Páginas: |
66 p. |
Série: |
(Embrapa Milho e Sorgo. Documentos, 221). |
Idioma: |
Português |
Conteúdo: |
Este trabalho apresenta a análise dos resultados do levantamento do perfil dos usuários da Plataforma IrrigaWeb e do Serviço de Atendimento ao Consumidor (SAC) da Embrapa, com ênfase no uso de tecnologias de irrigação. Esta iniciativa está inserida no contexto do Portfólio de Agricultura Irrigada da Embrapa, contribuindo para o alinhamento estratégico dos objetivos do Portfólio com as demandas atuais de usuários dos serviços oferecidos pela Empresa. Por meio deste estudo, espera-se oferecer subsídios à indução de novos eixos temáticos para projetos de pesquisa, direcionados ao desenvolvimento de políticas públicas e ao aumento da eficiência dos sistemas de irrigação. |
Palavras-Chave: |
Eficiência. |
Thesagro: |
Sistema de Irrigação; Transferência de Tecnologia. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180145/1/doc-221.pdf
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Marc: |
LEADER 01360nam a2200217 a 4500 001 2093491 005 2019-03-15 008 2018 bl uuuu 00u1 u #d 100 1 $aMELO, M. L. A. de 245 $aPerfil de usuários de tecnologias para a agricultura irrigada.$h[electronic resource] 260 $aSete Lagoas: Embrapa Milho e Sorgo$c2018 300 $a66 p. 490 $a(Embrapa Milho e Sorgo. Documentos, 221). 520 $aEste trabalho apresenta a análise dos resultados do levantamento do perfil dos usuários da Plataforma IrrigaWeb e do Serviço de Atendimento ao Consumidor (SAC) da Embrapa, com ênfase no uso de tecnologias de irrigação. Esta iniciativa está inserida no contexto do Portfólio de Agricultura Irrigada da Embrapa, contribuindo para o alinhamento estratégico dos objetivos do Portfólio com as demandas atuais de usuários dos serviços oferecidos pela Empresa. Por meio deste estudo, espera-se oferecer subsídios à indução de novos eixos temáticos para projetos de pesquisa, direcionados ao desenvolvimento de políticas públicas e ao aumento da eficiência dos sistemas de irrigação. 650 $aSistema de Irrigação 650 $aTransferência de Tecnologia 653 $aEficiência 700 1 $aANDRADE, C. de L. T. de 700 1 $aRIOS, S. de A. 700 1 $aFAVARIN, A. M. 700 1 $aVASCONCELLOS, J. H.
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