Fechar
Metadados

@Article{BroedelTomaCândVonR:2017:DiNoYe,
               author = "Broedel, Elis{\^a}ngela and Tomasella, Javier and C{\^a}ndido, 
                         Luiz Ant{\^o}nio and Von Randow, Celso",
          affiliation = "{Instituto Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Deep soil water dynamics in an undisturbed primary forest 
                         incentral Amazonia: differences between normal years and the2005 
                         drought",
              journal = "Hydrological Processes",
                 year = "2017",
               volume = "31",
               number = "Apr.",
                pages = "1749--1759",
             keywords = "central Amazonia, deep root water uptake, evapotranspiration, soil 
                         moisture.",
             abstract = "Understanding how Amazonian rainforests deal with extended 
                         droughts is critical in the face of changing climate. This 
                         research analyze the physical properties and the soil water 
                         dynamics of a deep soil profile in an area of primary forest in 
                         central Amazonia to elucidate these processes under drought and 
                         nondrought conditions. Physical soil properties derived from soil 
                         cores exhibited a distinctive layer between 480 and 880cm deep, 
                         characterized by higher microporosity and low plant water 
                         availability. In situ soil moisture measurements collected during 
                         the period from January 2003 through February 2006 and for depths 
                         ranging from 10 to 1,430cm suggest that, in the study site, the 
                         top 480cm of the soil profile satisfied most of the 
                         transpirational demands in normal climatological years. However, 
                         during exceptionally dry periods, such as the 2005 drought, root 
                         uptake occurs below 480cm. As concluded by previous studies, most 
                         of the uptake is concentrated in the first meter of the soil 
                         profile: More than 40% of the total demand for transpiration is 
                         supplied by the top meter of soil. Because deep root uptake 
                         occurred at greater depths than normal during the 2005 drought, 
                         our results suggest that this is a fundamental mechanism to cope 
                         with prolonged droughts.",
                  doi = "10.1002/hyp.11143",
                  url = "http://dx.doi.org/10.1002/hyp.11143",
                 issn = "0885-6087",
             language = "en",
           targetfile = "broedel_deep.pdf",
        urlaccessdate = "26 nov. 2020"
}


Fechar