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Changes in Cu accumulation and fractionation along soil depth in acid soils of vineyards and abandoned vineyards (now forests)
Agriculture, Ecosystems & Environment ( IF 6.6 ) Pub Date : 2022-08-30 , DOI: 10.1016/j.agee.2022.108146
Raquel Vázquez-Blanco, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, David Fernández-Calviño, Paula Pérez-Rodríguez

This study investigated changes in copper accumulation and fractionation based on the depth of soils obtained from active and abandoned vineyards. Soil samples were collected at different depths in three areas with active and abandoned vineyards, and the concentrations of total copper and copper fractions were measured in these soil samples. Results revealed that in active vineyards, total copper accumulation was the highest in the first layer of soil (depth = 0–2 cm), with concentrations (193–892 mg kg−1) considerably higher than those in the deepest soil layer (depth = 40–50 cm; concentration = 63–71 mg kg−1). This accumulation was significantly correlated with the total carbon concentration in the soil. However, the total copper concentration in abandoned vineyards (84–374 mg kg−1) was the highest in the subsurface layers (depth = 10–15 cm) and was not significantly correlated with the total carbon content. Moreover, the percentage of available copper was lower in abandoned vineyards than in active vineyards. In terms of copper fractionation, the main fraction in active vineyard soil was copper bound to organic matter, whereas the main fraction in abandoned vineyard soil was residual copper. Therefore, vineyard abandonment and its transformation into forest changed the distribution and fractionation of copper based on soil depth, thus decreasing the amount of available copper and improving the soil quality, which could enable new ecosystems.



中文翻译:

葡萄园和废弃葡萄园(现为森林)酸性土壤中Cu沿土壤深度的积累和分馏变化

本研究根据从活跃和废弃葡萄园获得的土壤深度调查了铜积累和分馏的变化。在三个活跃和废弃的葡萄园区域的不同深度采集土壤样品,并测量这些土壤样品中总铜和铜组分的浓度。结果表明,在活跃的葡萄园中,总铜积累在第一层土壤(深度= 0-2 cm)中最高,浓度(193-892 mg kg -1)远高于最深土壤层(深度= 40–50 cm;浓度 = 63–71 mg kg -1 )。这种积累与土壤中的总碳浓度显着相关。然而,废弃葡萄园中的总铜浓度(84-374 mg kg-1)在地下层(深度= 10-15 cm)中最高,并且与总碳含量没有显着相关性。此外,废弃葡萄园中可用铜的百分比低于活跃葡萄园。就铜的分馏而言,活性葡萄园土壤中的主要成分是与有机质结合的铜,而废弃葡萄园土壤中的主要成分是残留铜。因此,葡萄园废弃和转为森林改变了铜的分布和基于土壤深度的分馏,从而减少了有效铜的数量并改善了土壤质量,这可能会形成新的生态系统。

更新日期:2022-08-30
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