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首页> 外文期刊>Revista rvore >Análise discriminante de solos sob diferentes usos em área de Mata Atlantica a partir de atributos da matéria organica
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Análise discriminante de solos sob diferentes usos em área de Mata Atlantica a partir de atributos da matéria organica

机译：atlantica mata地区不同用途的判别分析来自有机质的属性

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In the mountain region of the State of Rio de Janeiro (Atlantic Rain Forest biome), small farmers practice shifting cultivation in the slash and burn system. In this work, soil surfaces samples (0-15cm) of a Yellow Red Latossolo under five different vegetal coverings (Atlantic Rain Forest, annual culture, coffee, banana and pasture), had been taken in the small farming area of Bom Jardim RJ for soil chemical characterization and carbon content analysis in the different humic fractions. The samples taken under forest and pasture could be clearly isolated from the other groups for the discriminante model created. For the banana, coffee and culture groups, a certain overlapping was observed, indicating a similarity of the soil organic matter attributes between these coverings. The model allowed to correctly classify 88% of the analyzed samples. The fulvic acid (AF), organic carbon (C), total nitrogen (N), and the C/N ratio had been selected by the model, with the fulvic acids having the attribute of higher relative weight. This result suggests that the humic acids fractionation allows the detection of alterations in the soil that are not possible to be identified for the simple determination of the total organic carbon. The discriminate pattern of areas (forest-pasture and banana-coffe-culture) denotes that fertilizer could be related with changes in some important indicator attributes such as fulvic acids.
机译：在里约热内卢（大西洋雨林生物群系）的山区，小农民在斜杠和烧伤系统中练习栽培。在这项工作中，在Bom Jardim RJ的小农业领域采用了五种不同植物覆盖物（大西洋雨林，年度文化，咖啡，香蕉和牧场）的黄色红色Latossolo的土壤表面样本（0-15cm）不同腐殖级分的土壤化学表征和碳含量分析。在森林和牧场下采取的样品可以清楚地从其他群体中分离出来的鉴别模型。对于香蕉，咖啡和培养基，观察到某种重叠，表明这些覆盖物之间的土壤有机物质属性的相似性。该模型允许正确分类88％的分析样本。通过该模型选择富核酸（AF），有机碳（C），总氮（N）和C / N比，其具有相对重量较高的属性的富酸。该结果表明，腐殖酸分馏允许检测不可能被鉴定用于简单测定总有机碳的土壤中的改变。区分地区（森林 - 牧场和香蕉咖啡培养）表示肥料可能与一些重要指标属性的变化有关，例如富富酸。

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