In light of new technologies, such as remote sensors, software for managing databases, GPS technology, development and applications of geographic information systems, mathematical models, among others, various countries like USA, France; Germany, Russia, China, Brazil have decided to update its soil maps. Similarly, the improvement of soil classification systems, such as Soil Taxonomy and the World Reference Base of Soil;It has supported the need to update soil maps at various scales.

The soil map of the state of Yucatan has lagged behind in terms of the classification scheme used, so it is necessary to update both geometrically (areas) as a taxonomic level. It is necessary to generate soil information and retrieve and update the many soils data that already exists for the state of Yucatan, for the sustainable production of crops and their contribution in planning land use.

The objective of this study was to identify the relationship between the geomorphic environments, landforms and the soils in the Yucatan State.

Five geomorphic environments were identified: 1) Litoral; 2) Palustral; 3) Pseudo-palustral; 4) Karstic; and 5) Tectonic-karstic.  In each of the environments, there were identified the landforms (plains and low hills) and the soils.

Figura 3

 

The geomorphic and pedological approach allowed the identification and description of the coastal geomorphic landscapes and the pseudo-palustral plains, which had not been described before.

In the karst environment, at a higher altitude and more humidity, the limestone dissolution caused depressions in soils deeper than the Leptosols.  This intensified in the zones in which the platforms emerged at different geologic periods.  In the karstic plains from 10 to100 masl, it was observed a greater soil development due to a higher altitude and more humidity.

Figura 4The most important formation factors in the karstic plains were: Mean sea level, climate and geologic period of emergence.

Figura 5

Photographs of some of the soil profiles of the State of Yucatan

Bautista, F., Aguilar Y., Ihl T., Frausto O. 2015. Actualización del mapa de suelos de Yucatán, México: enfoque geeomorfopedológico y WRB. Ecosistemas y Recursos Agropecuarios,  2: 303-315.  http://132.248.10.25/era/index.php/rera/article/view/110

 

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