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SOIL SEED BANK IN SEASONAL SEMIDECIDUOUS FOREST AND ABANDONED PASTURE

机译:季节性半成齿林和废弃牧场的土壤种子库

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The objective of this study was to characterize the seed bank in the soil of different successional stages of Seasonal Semideciduous Forest and abandoned pasture in order to understand the natural regeneration potential of these areas. At each successional stage, 30 samples of soil were collected in the rainy and dry seasons to evaluate the qualitative heterogeneity of the forest, at the regeneration stage (FEA) forest, intermediate regeneration stage forest (ISF) and pasture (PAS). The species were classified according to the life form, successional group and dispersion syndrome. The number of individuals germinated was significantly higher (p < 0.001) in the ISF and in the rainy season (15,949 individuals). Richness was higher in the pasture area (79 species), with a significant difference only between the environments. Most species are herbaceous (49.5%), pioneers (76.5%) and zoocory was the main dispersion syndrome (49% of species). The results show that seed bank in the fragment of the regeneration advanced stage forest presents the highest resilience potential, since it is formed by different life forms and, mainly, by early and late secondary species.
机译:本研究的目的是在季节性半污水和废弃牧场的不同连续阶段的土壤中表征种子库,以了解这些地区的自然再生潜力。在每个连续阶段,在多雨和干燥的季节收集30个土壤样本,以评估森林的定性异质性,在再生阶段(FEA)森林,中间再生阶段森林(ISF)和牧场(PAS)。这些物种根据生命形式,继承组和分散综合征分类。萌发的个体的数量在ISF和雨季(15,949人)中显着高(P <0.001)。牧场地区(79种)的丰富度较高,在环境之间仅差异。大多数物种是草本植物(49.5%),先驱(76.5%)和Zoocory是主要的分散综合征(49%的物种)。结果表明,再生先进阶段森林片段中的种子群具有最高的弹性潜力,因为它由不同的生命形式形成,主要是早期和晚期次生物种形成。

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