Mapping a hydrophysical soil property through a comparative analysis of local and global scale approximations



Título del documento: Mapping a hydrophysical soil property through a comparative analysis of local and global scale approximations
Revista: Scientia Agricola
Base de datos: PERIÓDICA
Número de sistema: 000456231
ISSN: 0103-9016
Autores: 1
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Instituciones: 1Corporación Colombiana de Investigación Agropecuaria, Centro de Investigación "Tibaitatá", Bogotá. Colombia
Año:
Volumen: 78
Número: 2
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés Current available soil information allows building baselines to improve research, such as sustainable resource management; however, its use requires analysis of accuracy and precision that describes specific variables on local and global scales. Therefore, this study evaluated differences in the spatial distribution of water retention capacity (WRC) of the soil at a depth of 0.3 m, calculated from local general soil surveys and the global gridded soil information system (SoilGrids), using detailed or semi-detailed soil surveys as a reference, in two regions of Colombia (A and B). The qualitative and statistical analyses evaluated differences in WRC surfaces generated by the information sources. Neither information sources described WRC accurately, achieving correlations between −0.15 and 0.49 and average absolute errors between 9.65 and 19.52 mm for zones A and B, respectively. However, studies on the local scale remain within the ranges observed in the most detailed local studies. The use of products on the global scale is subject to regional analyses; nevertheless, they can be included as a covariate in digital soil mapping studies on more detailed scales
Disciplinas: Agrociencias,
Geografía
Palabras clave: Cartografía,
Suelos,
Mapeo,
Capacidad de retención de agua,
Colombia
Keyword: Cartography,
Soils,
Mapping,
Water retention capacity
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