Abstract
In order to evaluate the present condition of natural resources of the Milpa Ata area (Central Mexico) Environmental Biophysical Indicators (EBI) of state at detailed scale were determined. Environmental Biophysical Units (EBU) from morphogenetic characteristics of relief were obtained, which served as base as synthetic-unit of reference. EBI indicators of relief, land use/cover, climate and soil, factors were determined. The dominant EBU are from endogenous accumulative volcanic origin of upper, medium and lower mountain slopes of andesite-basalte lava flows of Pleistocene-Holocene. The dominant land use is of rain-feed agriculture of annual and semi permanent pricldy pear, crops. There are forest areas with Abies religiosa, Pinus spp and grassland areas which are used for sheep production. Climate influences the spatial distribution of land use-cover. Soils presented high organic matter contents, slightly acid, loamy-sand texture, and a complex of change dominated by Ca2+. The EBI indicators of state analyzed of EBU groups do not show deterioration for the study area. The statistical analyses from the EBI clustering using the EBU represent a spatial reference that will allow proposing strategies for handling and conservation of natural resources.
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