Flora y vegetación en la porción sur de la mixteca poblana

a vegetation sampling was carried out in ten municipalities of the southern mixteca region of puebla, with an area of approximately 1,668.74 km2. botanical samplings were made along with a quantitative ecological sampling to estimate the values of importance and basal area for the tree species of the most conserved areas. the objective was to determine the existing types of vegetation and the plant associations still present. results indicate the existence of flve vegetation types corresponding to deciduous tropical forest, palm land, tropical oak forest, gallery forest and juniperus forest. thirteen plant associations were identified, including seven that belong to the tropical oak forest, the most representative vegetation type. the preliminary floristic list includes 360 species, 225 genera and 77 families of vascular plants. a general discussion is made of vegetation patterns, their possible causes, the importance of the flora at the regional level and the present conservation status of the vegetation.