CHEMICAL CHARACTERISTICS OF A RED LATOSOL IN RECOVERING UNDER Pinus spp.

Para a recupera\ue7\ue3o de um solo \ue9 preciso selecionar e identificar esp\ue9cies aptas \ue0s novas condi\ue7\uf5es ed\ue1ficas e que, de forma r\ue1pida, acelerem a estrutura\ue7\ue3o e forma\ue7\ue3o dos horizontes mais superficiais do solo. O experimento teve como objetivos avaliar o desenvolvimento de algumas esp\ue9cies e variedades de Pinus , visando \ue0 detec\ue7\ue3o daquelas que apresentam maior potencialidade de adapta\ue7\ue3o e recupera\ue7\ue3o do solo degradado na regi\ue3o de cerrado e, para isto, foram avaliadas as condi\ue7\uf5es qu\uedmicas do solo em que se encontram as mesmas. Aos 20 anos, ap\uf3s o plantio, analisaram-se as caracter\uedsticas silviculturais e as propriedades qu\uedmicas do solo. Foram coletadas em cada parcela amostras deformadas nas camadas de 0,0-0,10; 0,10-0,20; 0,20-0,40 e 0,40-0,60 m. A utiliza\ue7\ue3o de esp\ue9cies de Pinus na recupera\ue7\ue3o de \ue1reas degradadas mostrou-se promissora melhorando as condi\ue7\uf5es qu\uedmicas do solo na camada de 0,00 \u2013 0,10 m, destacando-se o Pinus caribaea var. hondurensis por apresentar bom crescimento aliado a sua sobreviv\ueancia, o que garante a cobertura do solo devido \ue0 deposi\ue7\ue3o de mat\ue9ria org\ue2nica aumentando a soma de bases e a capacidade de troca cati\uf4nica. As esp\ue9cies de Pinus est\ue3o proporcionando condi\ue7\uf5es para o aumento da diversidade de esp\ue9cies espont\ue2neas.For the recovery of a soil, it is necessary to select and to identify suitable species to new soil conditions and, quickly, accelerate the structuring and formation of more superficial horizons of the soil. The experiment aimed to evaluate the development of some species and varieties of Pinus, aiming at detecting those that present the greatest potential for adaptation and recovery of degraded land in the savannah region, and for this, we evaluated the chemical conditions of the soil where they are present. At 20 years after planting, we analyzed the silvicultural characteritics and the chemical properties of the soil. In each plot, deformed samples were collected in the layers of 0.0-0.10, 0.10-0.20, 0.20-0.40 and 0.40-0.60 m. The use of Pinus species in reclamation showed promising improving the chemical conditions of the soil layer from 0.00 to 0.10 m, highlighting the Pinus caribaea var. hondurensis to present a good growth combined their survival, which guarantees the coverage of the soil due to deposition of organic matter by increasing the sum of bases and cation exchange capacity. The species of Pinus are providing conditions for the increasing of the diversity of spontaneous species