Patricia Fragoso, Alberto Pereira, Francisco Bautista  y Gonzalo Zapata

The aim of this work was to develop the digital map of soils for Quintana Roo for a printed scale 1:400000 with 1:50000 work scale data, initially with a geopedological approach and subsequently improved to a digital map.

The map was prepared with data from the formative factors of soils using mathematical methods to infer information in the places where these data are not available. Its elaboration included three stages, the first two following the principles of the geopedological approach consisted in the synthesis of the information generated in the characterization of the geomorphological landscapes (vertical dissection, karst geomorphometrics, failures, geology) and soils, in the third stage incorporating the environmental components (climate and vegetation) and related variables through various statistical analysis (cluster analysis, principal component analysis and classification analysis) the procedure allowed to obtain the pattern of distribution of the Soils to finally develop the model and get to the digital map of soils in the study area.

Vertical dissection, karstic forms (dolines, uvalas and poljes), karst faults densities, and the flooding regime for karstic, bodies of water, and age of parental materials, explain 65% of spatial distribution of soils from Quintana Roo, Mexico.

The analysis of classification denotes that above 83% of soil WRB group assignments are correct.

The soil WRB groups that occupies the territory is the Leptosol, Gleysol and Phaeozem, together occupy 75.6% of surface. Other soil WRB groups are Kastanozem, Regosol, Vertisol, Histosol, Solonchak, Arenosol and Fluvisol.

The map developed with data from the soil forming factors and associated with mathematical methods to infer information in the places where there are no data is an important input for the decision making process.