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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Alves,Bruno José Rodrigues (1) Balieiro,Fabiano de Carvalho (1) Franco,Avílio Antonio (1) Neufeldt,Henry (1) Pereira,Marcos Gervasio (1) Resende,Alexander Silva de (1) Mais... Palavra-chave 13C natural abundance (2) Cerrado formations (1) Eucalyptus grandis (1) Land-use change (1) Mixed plantations (1) Oxisol (1) Pseudosamanea guachapele (1) Soil fertility (1) Soil organic matter (1) Waterlogging (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Soil carbon and nitrogen in pasture soil reforested with eucalyptus and guachapele Rev. Bras. Ciênc. Solo Balieiro,Fabiano de Carvalho; Pereira,Marcos Gervasio; Alves,Bruno José Rodrigues; Resende,Alexander Silva de; Franco,Avílio Antonio. In spite of the normally low content of organic matter found in sandy soils, it is responsible for almost the totality of cation exchange capacity (CEC), water storage and availability of plant nutrients. It is therefore important to evaluate the impact of alternative forest exploitation on the improvement of soil C and N accumulation on these soils. This study compared pure and mixed plantations of Eucalyptus grandis and Pseudosamanea guachapele, a N2-fixing leguminous tree, in relation to their effects on soil C and N stocks. The studied Planosol area had formerly been covered by Panicum maximum pasture for at least ten years without any fertilizer addition. To estimate C and N contents, the soil was sampled (at depths of 0-2.5; 2.5-5.0; 5.0-7.5;... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mixed plantations; Pseudosamanea guachapele; Eucalyptus grandis; Soil organic matter; 13C natural abundance. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000300033 Geoecological drivers of cerrado heterogeneity and 13C natural abundance in oxisols after land-use change Rev. Bras. Ciênc. Solo Neufeldt,Henry. The 13C natural abundance technique was applied to study C dynamics after land-use change from native savanna to Brachiaria, Pinus, and Eucalyptus in differently textured Cerrado Oxisols. But due to differences in the d13C signatures of subsoils under native savanna and under introduced species, C substitution could only be calculated based on results of cultivated soils nearby. It was estimated that after 20 years, Pinus C had replaced only 5 % of the native C in the 0-1.2 m layer, in which substitution was restricted to the top 0.4 m. Conversely, after 12 years, Brachiaria had replaced 21 % of Cerrado C to a depth of 1.2 m, where substitution decreased only slightly throughout the entire profile. The high d13C values in the subsoils of the cultivated... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado formations; 13C natural abundance; Waterlogging; Oxisol; Soil fertility; Land-use change. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832006000500015 Registros recuperados: 2 Primeira ... 1 ... Última

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