Atributos do terreno na diferenciação e no mapeamento digital de solos

• Ano de defesa: 2015
• Autor(a) principal: Soares, Julio Cesar Wincher
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Recursos Florestais e Engenharia Florestal; UFSM; Programa de Pós-Graduação em Engenharia Florestal
• Palavras-chave em Português: Geomorfologia; MDE de alta resolução e exatidão; Classes de solos; Mineração de dados; Levantamento de solos; Geomorphology; MDE High resolution and accuracy; Soil classes; Data mining; Soil survey; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL
• Link de acesso: http://repositorio.ufsm.br/handle/1/3797

Terrain attributes control many hydrological, geomorphological and pedological processes, these processes influence the solar radiation, rainfall, runoff, evapotranspiration, soil moisture and the distribution of vegetation. In this way, the terrain attributes were extracted from MDE's high resolution (0.5 m) and accuracy to explain the differentiation of the soils of northeast region in the Rio Grande do Sul State, Brazil; also, to assess the accuracy of an MDS generated and soil maps obtained by the traditional soil survey, using the Kappa index, the overall accuracy, the user accuracy and correctness of the producer. Four representative catenas soils were studied of the landscape of the northeast region in the Rio Grande do Sul State. Terrain attributes analyzed by multivariate techniques showed to be effective in the differentiation of the soil, especially elevation, slope, the moisture content of the soil and the LS factor. The accuracy of the MDS was classified as excellent. The attributes of slope upstream slope, moisture content of the soil, elevation, LS factor and plane curvature in the