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首页> 外文期刊>European Journal of Soil Biology >Effects of single plant functional type loss on microbial community composition and litter decomposition in an alpine timberline ecotone
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Effects of single plant functional type loss on microbial community composition and litter decomposition in an alpine timberline ecotone

机译：单植物功能型损失对高血腺群体组成和凋落物分解在高山纺织线的影响

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摘要

Biodiversity loss likely occurs in alpine ecosystems under climate warming. However, little is known about the effect of plant functional type loss on the litter decomposition rate and microbial community composition. To test whether single functional type loss has a significant impact on the litter decomposition and microbial community composition, we conducted a litterbag experiment by randomly removing a single functional type from the litter mixtures of six functional types (evergreen conifer, evergreen shrubs, deciduous shrub, graminoid, forb and fern). Moreover, incubation sites were established in two vegetation types with contrasting microclimatic conditions in an alpine timberline ecotone. Based on a two-year decomposition experiment, we found that random loss of the single plant functional type did not significantly affect the mass loss rates and microbial community biomass and structure in the two vegetation types. Moreover, most losses of single plant functional type affected the investigated mass loss rates and microbial parameters in an additive way. In contrast, there were significant effects of vegetation type on the microbial community composition, irrespective of plant functional type loss treatments. We conclude that mass loss rates and microbial parameters in litter mixtures are largely predictable from those in individual plant functional type in the alpine timberline ecotone. Our findings suggest that, under climate change scenarios, losses of single plant functional type possibly induced by upward shifts of alpine plants would alter the microbial community composition in litters only under the condition of changes in microclimatic factors (i.e., moisture and temperature), which would have a profound impact on alpine ecosystems.
机译：None

著录项

  • 来源
    《European Journal of Soil Biology》 |2021年第1期|共10页
  • 作者

    Chen Yamei; Zhang Jian; Liu Yang; Wang Lifeng; Zheng Haifeng;

  • 作者单位

    Sichuan Agr Univ Inst Ecol &

    Forestry Key Lab Ecol Forestry Engn Long Term Res Stn Alpine Forest Ecosyst Chengdu 611130 Peoples R China;

    Sichuan Agr Univ Inst Ecol &

    Forestry Key Lab Ecol Forestry Engn Long Term Res Stn Alpine Forest Ecosyst Chengdu 611130 Peoples R China;

    Sichuan Agr Univ Inst Ecol &

    Forestry Key Lab Ecol Forestry Engn Long Term Res Stn Alpine Forest Ecosyst Chengdu 611130 Peoples R China;

    Sichuan Agr Univ Inst Ecol &

    Forestry Key Lab Ecol Forestry Engn Long Term Res Stn Alpine Forest Ecosyst Chengdu 611130 Peoples R China;

    Univ Copenhagen Dept Geosci &

    Nat Resource Management Rolighedsvej 23 DK-1958 Frederiksberg C Denmark;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤生物学;
  • 关键词

    Additive effects; Litter mixture decomposition; Plant functional type loss; Microbial community composition;

    机译：添加剂效果;凋落物混合物分解;植物功能型损失;微生物群落组成;

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