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Shrub expansion raises both aboveground and underground multifunctionality on a subtropical plateau grassland: coupling multitrophic community assembly to multifunctionality and functional trade-off

文献类型： 外文期刊

作者： Ding, Leilei 1 ; Chen, Hong 2 ; Wang, Mengya 3 ; Wang, Puchang 4 ;

作者机构： 1.Guizhou Acad Agr Sci, Guizhou Inst Prataculture, Guiyang, Guizhou, Peoples R China

2.Guizhou Songbaishan Reservoir Management Off, Guiyang, Guizhou, Peoples R China

3.Guizhou Univ, Coll Anim Sci, Guiyang, Guizhou, Peoples R China

4.Guizhou Normal Univ, Sch Life Sci, Guiyang, Guizhou, Peoples R China

关键词： shrub expansion; aboveground and underground multifunctionality; multitrophic community assembly; functional trade-off; abundant and rare taxa; archaea; nematodes; protists

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

ISSN：

年卷期： 2024 年 14 卷

页码：

收录情况： SCI

摘要： IntroductionShrubs have expanded into grasslands globally. However, the relative importance of aboveground and underground diversity and the relative importance of underground community assembly and diversity in shaping multifunctionality and functional trade-offs over shrub expansion remains unknown.MethodsIn this study, aboveground and underground multitrophic communities (abundant and rare archaea, bacteria, fungi, nematodes, and protists) and 208 aboveground and underground ecosystem properties or indicators were measured at three stages (Grass, Mosaic, Shrub) of shrub expansion on the Guizhou subtropical plateau grassland to study multifunctionality and functional trade-offs.ResultsThe results showed that shrub expansion significantly enhanced aboveground, underground, and entire ecosystem multifunctionality. The functional trade-off intensities of the aboveground, underground, and entire ecosystems showed significant V-shaped changes with shrub expansion. Shrub expansion improved plant species richness and changed the assembly process and species richness of soil abundant and rare subcommunities. Plant species diversity had a greater impact on multifunctionality than soil microbial diversity by more than 16%. The effect of plant species diversity on functional trade-offs was only one-fifth of the effect of soil microbial diversity. The soil microbial species richness did not affect multifunctionality, however, the assembly process of soil microbial communities did. Rather than the assembly process of soil microbial communities, the soil microbial species richness affected functional trade-offs.DiscussionOur study is the first to couple multitrophic community assemblies to multifunctionality and functional trade-offs. Our results would boost the understanding of the role of aboveground and underground diversity in multifunctionality and functional trade-offs.

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