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portuguesA construcao da usina hidreletrica de Ilha Solteira, no interior de Sao Paulo, foi iniciada nos anos 1960, quando foi retirado, em media, 8,60 m de solo em profundidade, dando origem a uma area degradada. Com isso, iniciou-se em 2005 um plano de recuperacao da area no municipio de Selviria/MS com plantio de especies vegetais adaptadas ao bioma Cerrado. Assim, este trabalho teve como objetivo avaliar a macrofauna do solo de uma area em processo de recuperacao com plantio de diferentes tipos de cobertura vegetal (1- solo nu (testemunha); 2- vegetacao nativa de Cerrado; 3- especie arborea Astronium fraxinifolium; 4- Astronium fraxinifolium + Canavalia ensiformis; 5- Astronium fraxinifolium + Raphanus sativus; 6- Astronium fraxinifolium + Brachiaria decumbens + lodo de esgoto). A macrofauna de solo foi avaliada em 2005, 2006 e 2007 utilizando o metodo de coleta direta e contagem manual. Foram determinados: quantidade de especies e indices de diversidade e uniformidade. As analises de componentes principals (PCA) e de cluster foram utilizadas para interpretacao de dados. Os resultados mostraram que o tratamento 6 (Astronium fraxinifolium + Brachiaria decumbens + lodo de esgoto) aumentou a populacao de macrofauna do solo em aproximadamente 4 a 6 vezes mais que os demais tipos de cobertura vegetal apos tres anos de avaliacao. As analises de PCA e de cluster mostraram aproximacao dos dados do tratamento 6 as condicoes ambientais naturais de Cerrado, indicando ser o tratamento mais adequado para a recuperacao do solo degradado EnglishThe construction of the hydroelectric power plant of Ilha Solteira, in state of Sao Paulo, was initiated in the 1960s, when an average, 8.60 m of soil depth was removed, resulting in a degraded area. A plan for the recovery of the area started in 2005 in Selviria /MS with the use of plant species adapted to the Cerrado biome. This study aimed to evaluate the soil macrofauna of an area under recovery by using different types of soil cover (1- bare soil (control); 2- native Cerrado vegetation; 3- specie Astronium fraxinifolium; 4- Astronium fraxinifolium + Canavalia ensiformis; 5- Astronium fraxinifolium + Raphanus sativus; 6- Astronium fraxinifolium + Brachiaria decumbens + sewage sludge). Soil macrofauna was evaluated in 2005, 2006 and 2007 using the direct collection method and manual counting. Number of species, diversity and uniformity index were determined. Principal component analysis (PCA) and cluster analysis were used for data interpretation. Results showed that treatment 6 (Astronium fraxinifolium+ Brachiaria decumbens+ sewage sludge) increased the soil macrofauna population by approximately 4 to 6 times more than the other types of cover after three years of evaluation. And the PCA and cluster analysis showed the approximation of the data between treatment 6 and Cerrado, which represents the most appropriate treatment for the recovery of the degraded soil

Soil macrofauna as bioindicator of the recovery of degraded Cerrado soil