Evolution of the landscape and pedodiversity on volcanic deposits in the south of the Basin of Mexico and its relationship with agricultural activities Evolución del paisaje y pedodiversidad sobre depósitos volcánicos en el sur de la Cuenca de México y su relación con actividades agrícolas Elizabeth Solleiro-Rebolledo1‡ , Yazmín Rivera-Uria1 , Bruno Chávez-Vergara1,2 , Jaime Díaz-Ortega1 , Sergey Sedov1 , Jorge René Alcalá-Martínez 1,2 , Ofelia Ivette Beltrán-Paz1 , and Luis Gerardo Martínez-Jardines1 1 Instituto de Geología; 2 Laboratorio Nacional de Geoquímica y Mineralogía. Circuito de la Investigación Científica s/n. Cd. Universitaria. 04510 Ciudad de México, México. ‡ Corresponding author (
[email protected]) SUMMARY carbonates places their formation in the mid-Holocene, an epoch for which drier conditions are detected in In this work, we present the results of a soil study other sites of the Basin of Mexico. The agricultural land in the Teuhtli volcano, located to the south of the Basin use has also promoted morphological, chemical and of Mexico with the aim to understand the pedogenetic physical changes in the soils. The continuous tillage pathways and the evolution of the landscape dynamics. of the sites has prevented the soils from developing. Two different types of soil prof iles were sampled: in This could have a negative effect on the fertility of “conserved” areas, with less anthropogenic influence those soils currently used to sustain the peri-urban and in sites with intense agriculture activities since agroecosystems of Mexico City. pre-Hispanic times. The three conserved prof iles are located in different landscape positions: the Cima Index words: andosolization, land use change, prof ile in the summit, the Ladera prof ile in the high pedogenic carbonates, Teuhtli volcano.