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首页> 外文期刊>Pedobiologia >Microbial activity, microarthropods and the phenomenon of positive, nonadditive decomposition of mixed litter
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Microbial activity, microarthropods and the phenomenon of positive, nonadditive decomposition of mixed litter

机译：微生物活性，微幼儿和混合垃圾的阳性，非吸收分解现象

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摘要

Litter decomposition is a fundamental ecosystem process that is essential to nutrient cycling, to the flow of energy through the decomposer food web, and to soil carbon sequestration. For a given climate, litter quality is a major controller of decomposition via its impacts on the activities of decomposer communities, including those of microarthropods and microorganisms. In nature, litter quality can be strongly affected by the composition of mixtures of litter from different plant species or litter of varying age. In contrast with the decomposition of single litter types, the decomposition of litter mixtures may be non-additive, making its prediction difficult. Positive, non-additive decomposition may occur, for example, when microarthropod density is increased in one litter type due to the presence of a second litter type, or when microbial activity in one litter type is stimulated by the presence of a second litter type. We tested the involvement of microarthropod and microbial communities in positive, non-additive decomposition using a model clover litter - oat straw mixture. We found that positive, nonadditive decomposition was not associated with changes in microarthropod density, but was associated with significant increases in microbial activity.
机译：凋落物分解是一种基本的生态系统过程，对营养循环至关重要，通过分解食品网的能量流动，以及土壤碳封存。对于给定的气候，垃圾质量是通过对分解器社区的影响的影响，包括微量育和微生物的影响。本质上，垃圾质量可能受到不同植物种类的组成或不同年龄的不同植物种类或垃圾的影响。相反，与单窝质类型的分解相反，凋落物混合物的分解可以是非添加剂，使其预测难以。例如，当由于第二垫料类型的存在，例如，当由于第二垫料的存在，或者当通过存在第二垫片型刺激一种垃圾型微生物活性时，当在一个垃圾型中增加微量接收密度时，或者当通过第二垫片的存在刺激微生物活性时，可以发生阳性，非添加剂分解。我们使用模型三叶草砂秸秆混合物测试了微量接收和微生物群落中的微观群和微生物群落的参与。我们发现阳性，非过度分解与微幼儿密度的变化无关，但与微生物活性的显着增加有关。

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