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@Article{CapoaneTiecSant:2017:VaAtSo,
               author = "Capoane, Viviane and Tiecher, Tales and Santos, Danilo Rheinheimer 
                         dos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Federal do Rio Grande do Sul (UFRGS)} and 
                         {Universidade Federal de Santa Maria (UFSM)}",
                title = "Varia{\c{c}}{\~a}o de atributos do solo ao longo de tr{\^e}s 
                         topossequ{\^e}ncias no planalto do Rio Grande do Sul",
              journal = "Revista Brasileira de Geografia F{\'{\i}}sica",
                 year = "2017",
               volume = "10",
               number = "5",
                pages = "1435--1454",
             keywords = "Uso da terra, posi{\c{c}}{\~a}o topogr{\'a}fica, perfil do 
                         solo, propriedades do solo,Land use, topographic position, soil 
                         profile, soil properties.",
             abstract = "Este trabalho investigou os efeitos da topografia e das 
                         pr{\'a}ticas de uso e manejo do solo na variabilidade de alguns 
                         atributos do solo ao longo de tr{\^e}s topossequ{\^e}ncias 
                         localizadas no planalto do Rio Grande do Sul. As 
                         topossequ{\^e}ncias (Tps) est{\~a}o inseridas em uma bacia 
                         hidrogr{\'a}fica situada no munic{\'{\i}}pio de J{\'u}lio de 
                         Castilhos. Na Tp1 foram definidos quatro pontos de amostragem e na 
                         Tp2 e Tp3, cinco pontos. Em cada perfil foram coletadas amostras 
                         em cinco camadas de solo (0\‒5, 5\‒10, 
                         10\‒20, 20\‒40 e 40\‒60 cm). Em 
                         laborat{\'o}rio foram determinados os atributos: densidade, 
                         argila, pH em {\'a}gua, carbono (C) org{\^a}nico total, 
                         f{\'o}sforo (P) total, P org{\^a}nico total, P 
                         dispon{\'{\i}}vel, {\'o}xidos de ferro (Fe) e alum{\'{\i}}nio 
                         (Al) cristalinos e amorfos. Os resultados encontrados mostram que 
                         o movimento de sedimentos em superf{\'{\i}}cie e atrav{\'e}s do 
                         perfil do solo {\'e} controlado pela posi{\c{c}}{\~a}o, forma e 
                         declividade da encosta e, pelas atividades antr{\'o}picas como o 
                         uso e manejo do solo e aplica{\c{c}}{\~a}o de fertilizantes. 
                         Considerando as classes de uso da terra, os maiores teores de C e 
                         P (total, org{\^a}nico e dispon{\'{\i}}vel) foram obtidos na 
                         {\'a}rea {\'u}mida, seguido da lavoura e campo nativo. 
                         Considerando a posi{\c{c}}{\~a}o na encosta os teores de C e P 
                         foram maiores na baixada seguido da base da encosta, topo e meia 
                         encosta. A condi{\c{c}}{\~a}o hidrom{\'o}rfica ao longo das 
                         topossequ{\^e}ncias desempenhou um papel importante na 
                         disponibilidade de P, ac{\'u}mulo C org{\^a}nico total e 
                         solubiliza{\c{c}}{\~a}o dos {\'o}xidos de Fe e Al ABSTRACT: 
                         This work investigated the effects of topography and land use and 
                         soil management practices on the variability of some soil 
                         properties along three toposequences located in the Rio Grande do 
                         Sul plateau, Southern Brazil. The toposequences (Tps) evaluated 
                         are from a watershed located in the municipality of J{\'u}lio de 
                         Castilhos. Soil samples were taken in four points in Tp1 and in 
                         five points in Tp2 and Tp3. In each point samples were taken at 
                         five depths (0\‒5, 5\‒10, 10\‒20, 20\‒ 
                         40, and 40\‒60 cm). The soil properties evaluated were soil 
                         density, clay, pH in water, total organic carbon (C), total 
                         phosphorus (P), total organic P, available P, and amorphous and 
                         crystalline iron (Fe) and aluminum (Al) oxides. Results show that 
                         the transport of sediments on the surface and through the soil 
                         profile is controlled by topographic position, landform, slope, 
                         and also by the anthropic activities such as the use and 
                         management of the soil and the application of fertilizers. 
                         Considering the classes of land use, the highest levels of C and P 
                         (total, organic and available) were obtained in the wetlands, 
                         followed by the crop fields and natural grasslands. Considering 
                         the topographic position, the contents of C and P were higher in 
                         the floodplain followed by the base of the slope, top and middle 
                         slope. Hydromorphic conditions along the toposequences played an 
                         important role in P availability, total organic C accumulation and 
                         solubilization of Fe and Al oxides.",
                 issn = "1984-2295",
                label = "lattes: 3598069757374025 1 CapoaneTiecSant:2017:VaAtSo",
             language = "pt",
           targetfile = "capoane_variacao.pdf",
        urlaccessdate = "28 nov. 2020"
}


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