Abstract
As a mega diverse country, Mexico is home to many plant and animal species, whose habitats are diverse ecosystems that have been formed. This mega diversity is being threatened because national studies have confirmed the loss of vegetative cover as a process of land use change to develop activities that represent a greater satisfaction for growing society. The aim of this study was to know the current state of vegetation of the basin of San Cristobal de las Casas, in response to the land use change in the period 1976 to 2002. In this regard, changes observed are similar to what happens in the overall picture, where the loss of plant cover is evident since increments above 5000 ha (the sixth part of the basin, with an area of 29,730 ha) were quantified for rainfed agriculture, related to the reduction of forest areas and grasslands. On the other hand, urban areas increased more than 10 times its surface (from 149 to 1,903 ha) during the same period.
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