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Abstract

The main objective of this paper is the determination of the phytogeographic affinity index of the Ecological Region (eco-region) Tatacoa Dessert with other zones of tropical dry woodland in Colombia (TDW). This goal was achieved by conducting an extensive bibliographic review of both the number of existing vegetal species and their registration in the studied zone an common species to other countrywide territory in order to build a consolidated and to determine the similarity indexes by means of multivariate regression analysis techniques. The obtained results allowed us to establish the most suitable species in this living zone for their application to regreening labor, promoting the conservation of the native species which are appropriate for the tropical dry woodland in the Tatacoa dessert. This also calls for permitting to know the existing phytogeographic affinity among other zones in the Colombian nation so the plant cover in all the affected areas can be improved.