4 documents found, page 1 of 1
Training pedologist for soil mapping: Contextualizing methods and its accuracy ...
Costa,Elias Mendes; Ceddia,Marcos Bacis; Santos,Felipe Nascimento dos; Silva,Laiz de Oliveira; Rezende,Igor Prata Terra deABSTRACT There is a growing demand for more detailed knowledge about soils, their functions, and connections with human activities and environmental services. In Brazil, where soil survey and mapping have been scarce since the 1990s, there is a remarkable sense of urgency. Recently, a national soil program was created (PronaSolos) to attend to the massive demand for soil information. PronaSolos is an effort to ...
Mapping soil properties in a poorly-accessible area
Costa,Elias Mendes; Pinheiro,Helena Saraiva Koenow; Anjos,Lúcia Helena Cunha dos; Marcondes,Robson Altiellys Tosta; Gelsleichter,Yuri AndreiABSTRACT Soil maps are important to evaluate soil functions and support decision-making process, particularly for soil properties such as pH, carbon content (C), and cation exchange capacity (CEC), but the spatial resolution and soil depth should meet the needs of users. On another hand, the efficiency of statistical models to create soil maps, with an acceptable level of accuracy, often require a large number ...
Digital elevation model quality on digital soil mapping prediction accuracy
Costa,Elias Mendes; Samuel-Rosa,Alessandro; Anjos,Lúcia Helena Cunha dosABSTRACT Digital elevation models (DEM) used in digital soil mapping (DSM) are commonly selected based on measures and indicators (quality criteria) that are thought to reflect how well a given DEM represents the terrain surface. The hypothesis is that the more accurate a DEM, the more accurate will be the DSM predictions. The objective of this study was to assess different criteria to identify the DEM that del...
Processamento de imagens RapidEye no mapeamento de uso do solo em ambiente de M...
Costa,Elias Mendes; Antunes,Mauro Antonio Homem; Debiasi,Paula; Anjos,Lúcia Helena Cunha dosResumo O objetivo deste trabalho foi analisar características de imagem do satélite RapidEye, bem como avaliar sua qualidade, quanto à ortorretificação, e sua aplicação no mapeamento de uso do solo, em ambiente de Mar de Morros. As imagens passaram por correção atmosférica, seguida por avaliação dos seguintes aspectos: resposta espectral a diferentes alvos, na imagem sem correção e na corrigida; acurácia da ima...