Brazilian Soil Dataset

A Comprehensive Dataset of Soil Properties for Brazil

Processing of soil data from datasets published in the Brazilian Soil Data Repository (FEBR, https://www.pedometria.org/febr/; SoilData, https://soildata.mapbiomas.org/). The data undergoes cleaning, standardization and, when possible, harmonization. The resulting dataset is made available in a single TXT file for reuse, respecting the original data use licenses.

The following variables are included in the dataset:

From table 'observation':

1. taxon_sibcs: soil classification according to the Brazilian Soil Classification System;
2. taxon_st: soil classification according to Soil Taxonomy;
3. taxon_wrb: soil classification according to the World Reference Base for Soil Resources;

From table 'layer':

1. terrafina: the content of the fine earth fraction (< 2 mm) in the whole soil, in g/kg;
2. carbono: organic carbon content in the fine earth fraction, in g/kg;
3. argila: total clay content in the fine earth fraction, in g/kg;
4. silte: total silt content in the fine earth fraction, in g/kg;
5. areia: total sand content in the fine earth fraction, in g/kg;
6. ctc: cation exchange capacity of the fine earth fraction, in cmol_c/kg;
7. ph: pH in water of the fine earth fraction, without a unit of measurement;
8. ce: electrical conductivity of fine earth fraction, in mS/cm;
9. dsi: density of the entire soil, in kg/dm^3.

Additional data:

• upper (profund_sup) and lower (profund_inf) depth of the sampled layer, in cm;
• observation or sampling date (observacao_data);
• coordinates of the observation or sampling location (coord_x and coord_y), in decimal degrees, using SIRGAS 2000 (EPSG:4674) as the coordinate reference system.

The data cleaning procedures adopted are described in each R script. The other data standardization and harmonization procedures are described in the help pages of the febr package for R at https://www.pedometria.org/software/febr/.

Contributors

The following people contributed to the data processing (in alphabetical order):

• Beatriz Hiyori Hamada (Universidade Tecnológica Federal do Paraná)
• Eloi Ribeiro (ISRIC - World Soil Information)
• Glauber José Vaz (Embrapa Informática Agropecuária)
• João Herbert Moreira Viana (Embrapa Milho e Sorgo)
• Maria Eduarda Vilas Boas Alves (Universidade Tecnológica Federal do Paraná)
• Matheus Ferreira Ramos (Universidade Tecnológica Federal do Paraná)
• Mikael Pereira Messias (Universidade Tecnológica Federal do Paraná)
• Paulo Ivonir Gubiani (Universidade Federal de Santa Maria)
• Ricardo Simão Diniz Dalmolin (Universidade Federal de Santa Maria)
• Stanley Robson de Medeiros Oliveira (Embrapa Informática Agropecuária)
• Taciara Zborowski Horst (Universidade Tecnológica Federal do Paraná)
• Wenceslau Geraldes Teixeira (Embrapa Solos)