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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
10/01/2020 |
Data da última atualização: |
06/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
HOTT, M. C.; CARVALHO, L. M. T.; ANTURNES, M. A. H.; RESENDE, J. C. de; ROCHA, W. S. D. da. |
Afiliação: |
MARCOS CICARINI HOTT, CNPGL; Luis M. T. Carvalho; Mauro A. H. Antunes; JOAO CESAR DE RESENDE, CNPGL; WADSON SEBASTIAO DUARTE DA ROCHA, CNPGL. |
Título: |
Analysis of grassland degradation in Zona da Mata, MG, Brazil, based on NDVI time series data with the integration of phenological metrics. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Remote Sensing, v. 11, n. 24, article 2956, 2019. |
DOI: |
https://doi.org/10.3390/rs11242956 |
Idioma: |
Inglês |
Conteúdo: |
There is currently a lot of interest in determining the state of Brazilian grasslands. Governmental actions and programs have recently been implemented for grassland recovery in Brazilian states, with the aim of improving production systems and socioeconomic indicators. The aim of this study is to evaluate the vegetative growth, temporal vigor, and long-term scenarios for the grasslands in Zona da Mata, Minas Gerais State, Brazil, by integrating phenological metrics. We used metrics derived from the normalized difference vegetation index (NDVI) time series from moderate resolution imaging spectroradiometer (MODIS) data, which were analyzed in a geographic information system (GIS), using multicriteria analysis, the analytical hierarchy process, and a simplified expert system (ESS). These temporal metrics, i.e., the growth index (GI) for 16-day periods during the growing season; the slope; and the maximum, minimum, and mean for the time series, were integrated to investigate the grassland vegetation conditions and degradation level. The temporal vegetative vigor was successfully described using the rescaled range (R/S statistic) and the Hurst exponent, which, together with the metrics estimated for the full time series, imagery, and field observations, indicated areas undergoing degradation or areas that were inadequately managed (approximately 61.5%). Time series analysis revealed that most grasslands showed low or moderate vegetative vigor over time with long-term persistence due to farming practices associated with burning and overgrazing. A small part of the grasslands showed high and sustainable plant densities (approximately 8.5%). A map legend for grassland management guidelines was developed using the proposed method with remote sensing data, which were applied using GIS software and a field campaign. MenosThere is currently a lot of interest in determining the state of Brazilian grasslands. Governmental actions and programs have recently been implemented for grassland recovery in Brazilian states, with the aim of improving production systems and socioeconomic indicators. The aim of this study is to evaluate the vegetative growth, temporal vigor, and long-term scenarios for the grasslands in Zona da Mata, Minas Gerais State, Brazil, by integrating phenological metrics. We used metrics derived from the normalized difference vegetation index (NDVI) time series from moderate resolution imaging spectroradiometer (MODIS) data, which were analyzed in a geographic information system (GIS), using multicriteria analysis, the analytical hierarchy process, and a simplified expert system (ESS). These temporal metrics, i.e., the growth index (GI) for 16-day periods during the growing season; the slope; and the maximum, minimum, and mean for the time series, were integrated to investigate the grassland vegetation conditions and degradation level. The temporal vegetative vigor was successfully described using the rescaled range (R/S statistic) and the Hurst exponent, which, together with the metrics estimated for the full time series, imagery, and field observations, indicated areas undergoing degradation or areas that were inadequately managed (approximately 61.5%). Time series analysis revealed that most grasslands showed low or moderate vegetative vigor over time with long-term persistenc... Mostrar Tudo |
Palavras-Chave: |
NDVI; Phenological metrics; Time series. |
Thesaurus Nal: |
Degradation; Grasslands; Remote sensing. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208582/1/Analysis-of-Grassland-Degradation-in-Zona-da-Mata-.pdf
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Marc: |
LEADER 02638naa a2200253 a 4500 001 2118582 005 2024-02-06 008 2019 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/rs11242956$2DOI 100 1 $aHOTT, M. C. 245 $aAnalysis of grassland degradation in Zona da Mata, MG, Brazil, based on NDVI time series data with the integration of phenological metrics.$h[electronic resource] 260 $c2019 520 $aThere is currently a lot of interest in determining the state of Brazilian grasslands. Governmental actions and programs have recently been implemented for grassland recovery in Brazilian states, with the aim of improving production systems and socioeconomic indicators. The aim of this study is to evaluate the vegetative growth, temporal vigor, and long-term scenarios for the grasslands in Zona da Mata, Minas Gerais State, Brazil, by integrating phenological metrics. We used metrics derived from the normalized difference vegetation index (NDVI) time series from moderate resolution imaging spectroradiometer (MODIS) data, which were analyzed in a geographic information system (GIS), using multicriteria analysis, the analytical hierarchy process, and a simplified expert system (ESS). These temporal metrics, i.e., the growth index (GI) for 16-day periods during the growing season; the slope; and the maximum, minimum, and mean for the time series, were integrated to investigate the grassland vegetation conditions and degradation level. The temporal vegetative vigor was successfully described using the rescaled range (R/S statistic) and the Hurst exponent, which, together with the metrics estimated for the full time series, imagery, and field observations, indicated areas undergoing degradation or areas that were inadequately managed (approximately 61.5%). Time series analysis revealed that most grasslands showed low or moderate vegetative vigor over time with long-term persistence due to farming practices associated with burning and overgrazing. A small part of the grasslands showed high and sustainable plant densities (approximately 8.5%). A map legend for grassland management guidelines was developed using the proposed method with remote sensing data, which were applied using GIS software and a field campaign. 650 $aDegradation 650 $aGrasslands 650 $aRemote sensing 653 $aNDVI 653 $aPhenological metrics 653 $aTime series 700 1 $aCARVALHO, L. M. T. 700 1 $aANTURNES, M. A. H. 700 1 $aRESENDE, J. C. de 700 1 $aROCHA, W. S. D. da 773 $tRemote Sensing$gv. 11, n. 24, article 2956, 2019.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Trigo; Embrapa Unidades Centrais. |
Data corrente: |
23/10/1995 |
Data da última atualização: |
23/10/1995 |
Autoria: |
SCHEEREN, P. L.; CARVALHO, F. I. F. de; FEDERIZZI, L. C. |
Afiliação: |
1 EMBRAPA-CNPT.; 3 UFRGS, Porto Alegre. |
Título: |
Componentes da estatura de planta em Trigo. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 16, n. 4, p. 527-538, jul/ago. 1981. |
ISSN: |
0100-204X |
Idioma: |
Português |
Conteúdo: |
A estatura da planta do trigo (Triticum aestivum L.) e seus componentes foram medidos em populações não segregantes (P1, P2 e F1) e segregantes (F2, RC1F1 e RC2F1), derivadas de cruzamentos entre diferentes genótipos de trigo em experimentos conduzido a campo na Estação Experimental Agronômica da Universiade Federal do Rio Grande do Sul, Guaíba, RS, em 1979. Amostragens de entrenós de ambos os genitores, semi-anões e altos, revelaram que: 1. O comprimento médio dos entrenós foi crescente de base ao ápice da planta; 2. Uma expressiva porção da variabialidade fenotípica do caráter "número de entrenós" era da natureza ambiental; 3. O pendúnculo contribuiu com, aproximadamente, 40% do estatura total dos genótipos. |
Thesagro: |
Estatura de Planta; Trigo; Triticum Aestivum. |
Thesaurus NAL: |
Wheat. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/198518/1/Componentes-da-estatura-de-planta-em-trigo.pdf
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Marc: |
LEADER 01308naa a2200205 a 4500 001 1824247 005 1995-10-23 008 1981 bl uuuu u00u1 u #d 022 $a0100-204X 100 1 $aSCHEEREN, P. L. 245 $aComponentes da estatura de planta em Trigo. 260 $c1981 520 $aA estatura da planta do trigo (Triticum aestivum L.) e seus componentes foram medidos em populações não segregantes (P1, P2 e F1) e segregantes (F2, RC1F1 e RC2F1), derivadas de cruzamentos entre diferentes genótipos de trigo em experimentos conduzido a campo na Estação Experimental Agronômica da Universiade Federal do Rio Grande do Sul, Guaíba, RS, em 1979. Amostragens de entrenós de ambos os genitores, semi-anões e altos, revelaram que: 1. O comprimento médio dos entrenós foi crescente de base ao ápice da planta; 2. Uma expressiva porção da variabialidade fenotípica do caráter "número de entrenós" era da natureza ambiental; 3. O pendúnculo contribuiu com, aproximadamente, 40% do estatura total dos genótipos. 650 $aWheat 650 $aEstatura de Planta 650 $aTrigo 650 $aTriticum Aestivum 700 1 $aCARVALHO, F. I. F. de 700 1 $aFEDERIZZI, L. C. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 16, n. 4, p. 527-538, jul/ago. 1981.
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