%0 Journal Article %T Comparison between abiotic parameters and the forest structure of a forest fragment and an eucalyptus (Eucalyptus saligna Smith) abandoned reforestation in the ecological park of Klabin, Telemaco Borba/PR Compara o entre parametros abi車ticos e a estrutura florestal de um fragmento de floresta e um reflorestamento abandonado de eucalipto (Eucalyptus saligna Smith) no parque ecol車gico da Klabin, Tel那maco Borba/PR %A Val谷ria Teodoro da Silva %A Paulo Souza Medri %A Talita Parpinelli Ferracin %A Edmilson Bianchini %J Semina : Ci那ncias Biol車gicas e da Sa迆de %D 2010 %I Universidade Estadual de Londrina %X The forest structure causes a direct impact on the microclimate, being important for the continuity of the successional processes as well as for the restoration of ecosystem processes. Studies on forest structure are important to help determine ecological restoration actions, improving its implementation. In order to compare two forest formations, being one of them a secondary forest fragment and the other one an abandoned area of eucalyptus reforestation, some abiotic parameters were evaluated in this study, as well as the forest structure of the areas. Amongst the abiotic factors studied, there are: temperature and relative air humidity, soil compaction, moisture and soil pH and thickness of the litter. In order to analyze the forest structure, the following items were evaluated: herbaceous cover on the soil, rate of canopy cover, the diameter at breast height (DBH), basal area (BA) and height of trees of all species. Among the parameters analyzed, comparing the areas, it was observed that: soil compaction was higher in the secondary forest (0.57 MPa) than in the eucalyptus reforestation (0.43 MPa); the presence of herbaceous plants on the soil occurred less in the eucalyptus reforestation (17.96%) than in the secondary forest (59.4%); the canopy cover index was of 45.99% for the eucalyptus reforestation, while in the secondary forest it was of 61.02%, being therefore higher for the latter. Nevertheless, according to Kolmogorov Smirnov test, the forest structure is not different between the areas, since the DBH and height values were not different between what was calculated and what was observed. A estrutura florestal tem impacto direto sobre o microclima, e 谷 importante para a continuidade dos processos sucessionais e para o restabelecimento dos processos do ecossistema. Estudos acerca da estrutura florestal s o importantes para auxiliar as a es de restaura o ecol車gica, melhorando a sua aplica o. Visando comparar duas forma es florestais, sendo uma delas um fragmento florestal secund芍rio e a outra uma 芍rea abandonada de reflorestamento com eucalipto, neste trabalho foram avaliados alguns parametros abi車ticos, bem como a estrutura florestal das 芍reas. Dentre os fatores abi車ticos estudados est o: temperatura e umidade relativa do ar, compacta o, umidade e pH do solo e espessura da serapilheira. Para analisar a estrutura florestal, foram avaliados: cobertura de herb芍ceas sobre o solo, 赤ndice de cobertura do dossel, diametro a altura do peito (DAP), 芍rea basal (AB) e altura das 芍rvores de todas as esp谷cies. Entre os parametros analisados, comparand %K Altura %K Cobertura do dossel %K Diametro do caule %K Floresta Secund芍ria %K Regenera o %K Serapilheira. %U http://www.uel.br/revistas/uel/index.php/seminabio/article/view/6604