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首页> 外文期刊>Naturwissenschaften >Nonparasitic Nematoda provide evidence for a linear response of functionally important soil biota to increasing livestock density
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Nonparasitic Nematoda provide evidence for a linear response of functionally important soil biota to increasing livestock density

机译：非寄生线虫为功能重要的土壤生物区系对牲畜密度的线性响应提供了证据

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摘要

Soil acidity, nutrient availability and livestock density have a major influence on the belowground ecological community. As fast decomposition rates are due mostly to bacterial-based pathways and slower decomposition rates mostly to fungal-based pathways, it is helpful to condense empirical information in the so-called Nematode Channel Ratio (NCR). The NCR is shown to be a good indicator of efficiency in soil decomposition processes. We argue that in intensive agroecosystems, other fungivore members of the decomposer food web may outcompete the hyphal-feeding nematodes. We demonstrate how the NCR can be used to set ecological standards for sustainable use of the soil in agroecosystems. To summarize the interactions between the microbial resources and the decomposer nematofauna according to increasing land management, we propose the use of the fifth percentile as proxy for a sustainable environmental quality of grasslands on sandy soils, and the NCR mean as the upper threshold for low-stocked farms.
机译：土壤酸度，养分利用率和牲畜密度对地下生态群落有重大影响。由于快速分解速率主要归因于基于细菌的途径，而较慢的分解速率主要归因于基于真菌的途径，因此有助于将经验信息浓缩为所谓的线虫通道比（NCR）。 NCR被证明是土壤分解过程中效率的良好指标。我们认为，在集约化农业生态系统中，分解食品网中的其他食肉动物成员可能会与菌丝饲养线虫竞争。我们演示了如何使用NCR设置农业生态系统中土壤可持续利用的生态标准。为了根据不断增加的土地管理总结微生物资源和分解者线虫之间的相互作用，我们建议使用第五个百分位数作为沙质土壤草地可持续环境质量的代名词，而NCR均值是低土壤肥力的上限。放养的农场。

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  • 来源
    《Naturwissenschaften》 |2005年第7期|314-318|共5页
  • 作者

    Christian Mulder; Jan B. Dijkstra (; –; 00; ); Heikki Setälä;

  • 作者单位

    Laboratory for Ecological Risk Assessment National Institute for Public Health and Environment (RIVM);

    Department of Mathematics Eindhoven University of Technology;

    Department of Ecological and Environmental Sciences University of Helsinki;

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