CHANGES IN MICROBIAL AND PHYSICOCHEMICAL SOIL PROPERTIES ASSOCIATE WITH CHARCOAL PRODUCTION IN TEMPERATE FOREST (QUERCUS SPP) IN SANTA ROSA, GTO. MEXICO.

The temperate forest of Quercus spp. Santa Rosa is one ofthe most extensive forests in central Mexico. In this forest,charcoal is produced traditionally by rural communities.This study evaluated the impact of the activity of charcoalproduction in three sampling sites of the forest, soil fromthe impact site, land adjacent to the site of charcoalproduction and control soil without charcoal productionactivity on physicochemical and microbiological properties.We determined pH, concentration of macro-and microelementswas performed by calculating microbial colonyforming units (CFU) of bacteria, fungi, actinomycetes andpromoting growth of plants rhizobacteria (PGPR). Finally,we determined microbial biomass by fumigation-incubationmethod. On the floor of coal production, an increase in pH,the concentration of cations forming bases (Ca2 + and K+)and a high regard microbial fungi, bacteria andactinomycetes, but the microbial biomass and organicmatter content was higher in the control soil, in terms ofRPCP only isolated in the soil adjacent to coal productionsite and the control soil. The physicochemical changesproduced by the warming effect of soil significantlyaffected the microbial community favoring the reduction orelimination of dominant groups sensitive to hightemperatures that are actively involved in the dynamics ofsoil processe