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Revista bio ciencias
versión On-line ISSN 2007-3380
Resumen
HERRERA-ROMERO, J. A.; BOJORQUEZ-SERRANO, J. I.; HERNANDEZ-JIMENEZ, A. y CAN-CHULIM, A.. Geomorfoedaphological landscapes and regularities of soil distribution in San Blas Nayarit, Mexico. Revista bio ciencias [online]. 2020, vol.7, e706. Epub 18-Nov-2020. ISSN 2007-3380. https://doi.org/10.15741/revbio.07.e706.
The objective of this study was to describe the geomorphological landscapes and to reorganize the Soil Referential Groups (SRS) according to the reliefs and the qualifiers to identify the regularities of the distribution of the soils of the municipality of San Blas, Nayarit. The soils found present great variability derived from the heterogeneity of the land and the factors that intervene in the study area, reflecting three regularities in the distribution and development of the soils, composed of 16 geomorphological landscapes. The first is the soils affected by the intrusion of sea water into the continent, these are soils of recent origin moderately acidic to neutral, very saline and sandy; the second regularity presents soils derived from the Rio Grande de Santiago Delta, with accumulation of alluvial sediments of fluvial origin, little developed very deep, show weak clay formation, of neutral pH, without salts except in the transition limits of sea or brackish water; the third regularity groups soils of mountainous relief of basaltic origin, the accumulation of clay is greater than in the rest of the territory and does not present salts, its percentage of organic matter (OM) is high to very high and of acidic pH. A total of eight Reference Groups of Classified Soils are described based on the World Reference Base for the soil resource, in which Fluvisols, Phaeozems, Luvisols, Arenosols and Cambisols soils stand out.
Palabras llave : Geomorphology; Edaphology; Coastal plain; Delta plain; relief.