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	Provedor de dados Anais da ABC (AABC) (1) Rev. Bras. Ciênc. Solo (1) Autor Benites,Vinicius de Melo (1) CURCIO,GUSTAVO R. (1) Canellas,Luciano Pasqualoto (1) Cunha,Tony Jarbas Ferreira (1) Madari,Beata Emoke (1) RODERJAN,CARLOS V. (1) Ribeiro,Lucedino Paixão (1) SCHEER,MAURICIO B. (1) Santos,Gabriel de Araújo (1) Mais... Palavra-chave Humin fraction (2) Atlantic Rain Forest (1) Carbon isotopes (1) Cation exchange capacity (1) Humic substances (1) Radiocarbon dating (1) Sea Mountain Range (1) Total soil carbon (1) Upper montane vegetation (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2013 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Soil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio) in the Brazilian Amazon basin Rev. Bras. Ciênc. Solo Cunha,Tony Jarbas Ferreira; Madari,Beata Emoke; Canellas,Luciano Pasqualoto; Ribeiro,Lucedino Paixão; Benites,Vinicius de Melo; Santos,Gabriel de Araújo. Fertility properties, total C (Ctot), and chemical soil organic matter fractions (fulvic acid fraction - FA, humic acid fraction - HA, humin fraction - H) of anthropogenic dark earths (Terra Preta de Índio) of the Amazon basin were compared with those of Ferralsols with no anthropogenic A horizon. Terra Preta soils had a higher fertility (pH: 5.1-5.4; Sum of bases, SB: 8.93-10.33 cmol c kg-1 , CEC: 17.2-17.5 cmol c kg-1 , V: 51-59 %, P: 116-291 mg kg-1) and Ctot (44.6-44.7 g kg-1) than adjacent Ferralsols (pH: 4.4; SB: 2.04 cmol c kg-1, CEC: 9.5 cmol c kg-1, V: 21 %, P 5 mg kg-1, C: 37.9 g kg-1). The C distribution among humic substance fractions (FA, HA, H) in Terra Preta soils was also different, as shown by the ratios HA:FA and EA/H (EA=HA+FA) (2.1-3.0... Tipo: Info:eu-repo/semantics/article Palavras-chave: Humic substances; Humin fraction; Cation exchange capacity; Total soil carbon. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000100009 The Late Holocene upper montane cloud forest and high altitude grassland mosaic in the Serra da Igreja, Southern Brazil Anais da ABC (AABC) SCHEER,MAURICIO B.; CURCIO,GUSTAVO R.; RODERJAN,CARLOS V.. Many soils of the highlands of Serra do Mar, as in other mountain ranges, have thick histic horizons that preserve high amounts of carbon. However, the age and constitution of the organic matter of these soils remain doubtful, with possible late Pleistocene or Holocene ages. This study was conducted in three profiles (two in grassland and one in forest) in Serra da Igreja highlands in the state of Paraná. We performed δ13C isotope analysis of organic matter in soil horizons to detect whether C3 or C4 plants dominated the past communities and 14C dating of the humin fraction to obtain the age of the studied horizons. C3 plants seem to have dominated the mountain ridges of Serra da Igreja since at least 3,000 years BP. Even though the Serra da Igreja may... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Rain Forest; Carbon isotopes; Humin fraction; Radiocarbon dating; Sea Mountain Range; Upper montane vegetation. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200769 Registros recuperados: 2 Primeira ... 1 ... Última

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