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E imprescindivel que se tenha conhecimento das condicoes climaticas de uma regiao para execucao de diversas atividades. Entre as classificacoes climaticas mais conhecidas, a de Koppen e a mais usual. Porem, Leslie R. Holdridge elaborou um sistema de classificacao no qual sao determinadas zonas de vida, as quais representam associacoes ecologicas semelhantes. O objetivo da presente pesquisa foi classificar o clima dos municipios de Goias e o Distrito Federal segundo Holdridge, comparando-os com o mapa de vegetacao do referido estado elaborado pelo IBGE e com o mapa da classificacao climatica de Koppen. Mediante uma base de dados elaborada por Alvares et al. (2013), foram extrapolados valores de precipitacao e temperatura para os 246 municipios de Goias e o Distrito Federal. Aliado ao calculo da biotemperatura e relacao de evapotranspiracao potencial, juntamente com o estabelecimento da regiao latitudinal e piso altitudinal local, foram determinadas as zonas de vida. Os resultados mostraram duas zonas de vida para a area de estudo: floresta umida tropical premontana (99,4% do territorio), correlacionada 96,88% com o clima Aw; e floresta seca/floresta umida tropical basal, correlacionada 100% com o clima Aw. A biotemperatura foi a variavel que diferiu para dois municipios localizados no extremo norte do estado, possibilitando o surgimento da zona de vida floresta seca/floresta umida tropical basal, que correspondeu a 0,6% do territorio. O emprego do sistema de classificacao climatica de Holdridge foi adequado para classificar o clima de Goias e do Distrito Federal pois correspondeu com a classificacao de Koppen e com a vegetacao. Palavras-chave: climatologia, biotemperatura, cerrado, vegetacao. A B S T R A C T It is essential to have knowledge of the climatic conditions of a region to carry out various activities. Among the best-known climatic classifications, Koppen's climate classification is the most usual. However, Leslie R. Holdridge has developed a classification system in which are determined the life zones, which represent similar ecological associations. The aim of this research was to classify the climate of the municipalities of Goias and the Federal District according to Holdridge, comparing them with the vegetation map of the state prepared by the IBGE and with the climate classification map of Koppen. Using a database developed by Alvares et al. (2013), precipitation and temperature values were extrapolated to the 246 municipalities of Goias and the Federal District. Ally with the calculation of biotemperature and relation of potential evapotranspiration, jointly with the establishment of the latitudinal region and local altitudinal levels, the life zones were determined. The results showed two life zones for the study area: tropical premontane moist forest (99.4% of the territory) correlated 96.88% with the Aw climate; and tropical dry forest/moist forest correlated 100% with the Aw climate. Biotemperature was the variable that differed for two municipalities located in the extreme north of the state, which allowed the appearing of the tropical dry forest/moist forest life zone that corresponded to 0.6% of the territory. The use of the Holdridge climate classification system was adequate to classify the Goias and the Federal District climate because it corresponded to the classification of Koppen and to the vegetation. Key-words: climatology, biotemperature, cerrado, vegetation.

revista brasileira de geografia física

Classificação do Estado de Goiás e do Distrito Federal segundo o Sistema de Zonas de Vida de Holdridge (Classification of Goiás State and the Federal District according to the Holdridge Life Zones System)