Nitrogen and phosphorus enrichment differentially affect grassland ecosystem functioning via multitrophic pathways

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Jie Yu, Liji Wu, Ying Wu, Bing Wang, Huasong Chen, Yongfei Bai, Dima Chen
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氮磷富集通过多营养途径对草地生态系统功能产生差异影响
营养物质(如氮和磷)的富集在形成多样性和生态系统功能之间的联系方面至关重要。以往的研究主要集中在养分富集如何影响单一营养水平(如植物或土壤微生物群落)内的群落多样性和组成。然而,营养富集如何影响不同营养水平和生态系统功能的群落组成和多样性尚未得到广泛探讨。通过对温带草原进行长期N -和P -富集实验,探讨了土壤食物网群落和功能群的多样性和组成对养分富集的响应,以及它们与生态系统功能的关系。研究发现,土壤生物群和植物对养分富集的响应因群落和功能群的不同而不同。N‐富集导致群落和功能群水平上的植物和细菌丰富度降低,而P‐富集导致真菌和线虫丰富度降低。此外,N -富集改变了植物和所有土壤生物的群落组成,而P -富集仅影响真菌和线虫的群落组成。研究结果还表明,当考虑到群落组成和多样性时,多个营养水平的群落组成在调节生态系统功能(如植物生物量、土壤生物群生物量和SOM分解)中起着至关重要的作用。例如,N -富集引起植物、细菌和线虫群落组成的变化,从而改变了植物生物量,而P -富集引起线虫群落组成的变化,从而改变了土壤生物群生物量和SOM分解。合成。总的来说,我们的研究表明,长期的营养富集可能对群落组成的影响大于多个营养水平的多样性,而这些群落组成的变化可能对生态系统功能具有广泛的影响。因此,在未来的气候变化研究中,不仅要关注群落多样性,还要关注群落组成,以阐明多样性与生态系统功能的关系。
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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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