Colombian soil texture: building a spatial ensemble model
Abstract 2 of spatial resolution. Ensemble machine learning (EML) algorithms (MACHISPLIN and landmap) were trained to predict the distribution of soil particle size fractions (PSFs) (clay, sand, and silt), and a comparison with SoilGrids (SG) products was performed. Finally, a spatial ensemble function was created to identify the smallest prediction errors between EML and SG. Our results are the first effort to build a national texture map (clay, sand, and silt fractions) based on digital soil mapping in Colombia. The results of EML algorithms showed that their accuracies were very similar at each standard depth, and were more accurate than SG. The largest improvement with the spatial ensemble was found at the first layer (0–5 cm). EML predictions were frequently selected for each PSF and depth in the total area; however, SG predictions were better when increasing soil depth in some specific regions. The final error distribution in the study area showed that sand presented higher absolute error values than clay and silt fractions, specifically in eastern Colombia. The spatial distribution of soil texture in Colombia is a potential tool to provide information for water-related applications, ecosystem services, and agricultural and crop modeling. However, future efforts need to improve aspects such as treating abrupt changes in the texture between depths and unbalanced data. Our results and the compiled database (10.6073/pasta/3f91778c2f6ad46c3cc70b61f02532db,, 10.6073/pasta/d6c0bf5847aa40836b42dcc3e0ea874e,) provide new insights to solve some of the aforementioned issues.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Colombian soil texture: building a spatial ensemble model ; volume:14 ; number:10 ; year:2022 ; pages:4719-4741 ; extent:23
Earth system science data ; 14, Heft 10 (2022), 4719-4741 (gesamt 23)
- Creator
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Varón-Ramírez, Viviana Marcela
Araujo-Carrillo, Gustavo Alfonso
Guevara Santamaría, Mario Antonio
- DOI
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10.5194/essd-14-4719-2022
- URN
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urn:nbn:de:101:1-2022110304270157671902
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:33 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Varón-Ramírez, Viviana Marcela
- Araujo-Carrillo, Gustavo Alfonso
- Guevara Santamaría, Mario Antonio
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