@Article{RosaBreuBalbGalv:2013:DiFlPa,
               author = "Rosa, Paulo Afonso and Breunig, F{\'a}bio Marcelo and Balbinot, 
                         Rafaelo and Galv{\~a}o, L{\^e}nio Soares",
          affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Universidade 
                         Federal de Santa Maria (UFSM)} and {Universidade Federal de Santa 
                         Maria (UFSM)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Din{\^a}mica da floresta do Parque Estadual do Turvo com 
                         {\'{\i}}ndices de vegeta{\c{c}}{\~a}o",
              journal = "Floresta e Ambiente",
                 year = "2013",
               volume = "20",
               number = "4",
                pages = "487--499",
                month = "out./dez.",
             keywords = "remote sensing, time series, rain, resilience, sensoriamento 
                         remoto, s{\'e}ries temporais, chuva, resili{\^e}ncia.",
             abstract = "In this study, we evaluated the relation between vegetation 
                         indices and rainfall in the 'Parque Estadual do Turvo' (PET), 
                         located in the northwest of Rio Grande do Sul (RS) state. The 
                         Normalized Difference Vegetation Index (NDVI) and Enhanced 
                         Vegetation Index (EVI) were determined from images of the Moderate 
                         Resolution Imaging Spectroradiometer (MODIS/Terra). Rainfall data 
                         from the Tropical Rainfall Measuring Mission (TRMM) allowed the 
                         calculation of the dry spell index. Data analysis showed that nine 
                         months presented rainfall below the average; 92 months had 
                         rainfall close to the average; and 50 months presented rainfall 
                         above the average. The annual cycles of NDVI and EVI did not 
                         present conclusive correlation with the abnormal rainfall data, 
                         showing that the forest is resilient to short dry periods. The 
                         NDVI showed more stability in the summer and winter. RESUMO: Este 
                         trabalho analisou a rela{\c{c}}{\~a}o entre {\'{\i}}ndices de 
                         vegeta{\c{c}}{\~a}o e precipita{\c{c}}{\~a}o, no Parque 
                         Estadual do Turvo (PET), localizado no noroeste do Estado do Rio 
                         Grande do Sul (RS). O Normalized Difference Vegetation Index 
                         (NDVI) e o Enhanced Vegetation Index (EVI) foram determinados a 
                         partir de imagens do Moderate Resolution Imaging Spectroradiometer 
                         (MODIS/Terra). Dados de precipita{\c{c}}{\~a}o do Tropical 
                         Rainfall Measuring Mission (TRMM) permitiram o c{\'a}lculo do 
                         {\'{\i}}ndice de estiagem. Foram identificados nove meses com 
                         precipita{\c{c}}{\~o}es abaixo da m{\'e}dia, 92 meses com 
                         precipita{\c{c}}{\~o}es normais e 50 meses com valores acima da 
                         m{\'e}dia. Os ciclos anuais de NDVI e EVI n{\~a}o apresentaram 
                         rela{\c{c}}{\~a}o conclusiva com a precipita{\c{c}}{\~a}o 
                         anormal, mostrando que a floresta apresenta resili{\^e}ncia para 
                         suportar pequenos per{\'{\i}}odos de seca. O NDVI apresentou 
                         maior estabilidade no ver{\~a}o e no inverno.",
                  doi = "10.4322/floram.2013.034",
                  url = "http://dx.doi.org/10.4322/floram.2013.034",
                 issn = "1415-0980 and 2179-8087",
             language = "pt",
        urlaccessdate = "11 maio 2024"
}