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@Article{GomesSimForOmeDal:2017:UsGeEs,
               author = "Gomes, Luciene and Sim{\~o}es, Silvio J. C. and Forti, Maria 
                         Cristina and Ometto, Jean Pierre Henry Balbaud and Dalla Nora, 
                         El{\'o}i Lennon",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Estadual Paulista (UNESP)} and {Instituto Nacional 
                         de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Using geotechnology to estimate annual soil loss rate in the 
                         brazilian cerrado",
              journal = "Journal of Geographic Information System",
                 year = "2017",
               volume = "9",
                pages = "420--439",
             keywords = "Erosion, Soil Conservation, Geographic Information System (GIS), 
                         Tropical Savanna, MATOPIBA.",
             abstract = "Soil erosion is a serious environmental problem that has adversely 
                         affected the worlds food production through the reduction of land 
                         productivity and water availability. The present study estimated 
                         annual soil loss rate and its spatial distribution in the most 
                         important Brazils agricultural region, the Brazilian Cerrado, 
                         using Revised Soil Loss Equation (RUSLE) model into Geographic 
                         Information System (GIS) framework. For this purpose, the soil 
                         erosion annual rate was determined in function of RUSLE model 
                         factors: rainfall erosivity (R), soil erodibility (K), topography 
                         (LS), crop management (C) and supporting conservation practice 
                         (P). All factors were obtained from literature. They were 
                         processed and integrated into a GIS, resulting in a map of annual 
                         soil loss rate. The methodology applied showed acceptable 
                         precision and it was possible to identify the most susceptible 
                         areas to water erosion. The average estimated rate of soil loss 
                         for the entire Cerrado was 12.8 t\∙ha\−1 
                         \∙yr\−1 . Large part of the Cerrado is under low 
                         soil loss zone corresponding to 79.91% of total surface area, 
                         while 15.70%, 3.74%, and 0.66% are under moderate, high, and very 
                         high, respectively. The average estimated rate of soil loss in 
                         areas used for silviculture was 52.1 t\∙ha\−1 
                         \∙yr\−1 . In semi-perennial, perennial, and annual 
                         crops cultivation were 29.3, 23.9, and 9.8 t\∙ha\−1 
                         \∙yr\−1 , respectively, while in the pasture was 
                         13.3 t\∙ha\−1 \∙yr\−1 . Except for 
                         annual crops, all farm and silviculture areas showed average soil 
                         loss ranging from moderate to high rate. These results suggest 
                         that the implementation of more effective management techniques 
                         and conservation practices are necessary for the Cerrado to 
                         maintain and to improve land productivity by ensuring national and 
                         international food demands.",
                  doi = "10.4236/jgis.2017.94026",
                  url = "http://dx.doi.org/10.4236/jgis.2017.94026",
                 issn = "2151-1950",
             language = "en",
           targetfile = "gomes_using.pdf",
        urlaccessdate = "24 nov. 2020"
}


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