Nitrogen-fixing plants increase soil nitrogen and neighbouring-plant biomass, but decrease community diversity: A meta-analysis reveals the mediating role of soil texture

IF 5.3 1区 环境科学与生态学 Q1 ECOLOGY
Sarah K. Ortiz, Amelia A. Wolf
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Abstract

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Abstract Image

固氮植物增加了土壤氮和邻近植物的生物量,但却降低了群落多样性:荟萃分析揭示了土壤质地的中介作用
最近的几项区域性研究对固氮植物(N-fixer)作为邻近植物群落的促进者这一普遍假设提出了质疑。我们进行了一项荟萃分析,以综合固氮植物对植物群落的影响,并了解生态环境如何调节这些影响。我们分析了评估固氮机和非固氮机对土壤氮、邻近植物(非固氮机)生物量和植物群落多样性的配对效应的研究;生态调节因素包括气候、土壤质地以及固氮机的生长形式和入侵状况。与非固氮植物相比,固氮植物的土壤氮和邻近植物生物量更高,但群落多样性更低。土壤质地对固氮剂对邻近植物生物量的影响有很强的中介作用;固氮剂的入侵状态和生长形式对固氮剂的促进作用也有显著的中介作用。综述:固氮作用介于促进和抑制之间,受内在和外在过程的调节,本分析深入探讨了这些因素如何调节固氮作用。总体而言,氮固定剂促进了邻近生物量的增加,但抑制了多样性,不过这些效应的巨大差异可部分归因于生态环境。
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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 We do not publish papers concerned solely with cultivated plants and agricultural ecosystems.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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