Nitrogen addition weakens the positive effect of tree diversity on soil microbial biomass

IF 6.3 1区 环境科学与生态学 Q1 ECOLOGY
Zhaohui Zhan, Nicolas Fanin, Xiaolei Sun, Sirui Peng, Zaipeng Yu, Xiaohua Wan, Hui Jia, Mengjuan Wang, Minghui Da, Shengen Liu, Zhiqun Huang, Nico Eisenhauer
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引用次数: 0

Abstract

氮素添加削弱了树木多样性对土壤微生物生物量的正向作用
植物多样性与土壤微生物相互作用,维持生态系统功能。虽然植物多样性与土壤微生物生物量密切相关,但氮素添加对这种关系的影响尚不清楚。本研究采用4个不同水平的树种丰富度(1、4、8和16种)和施氮量对土壤微生物总量(包括细菌、真菌和丛枝菌根真菌)的影响,以及施氮量如何调节这些影响。结果表明,树种丰富度显著增加了土壤微生物生物量,对细菌和丛枝菌根真菌生物量的影响大于对真菌总生物量的影响。然而,施氮降低了这些效益,这主要是因为施氮降低了树种丰富度对树木生产力和土壤养分含量的积极作用。合成。这些结果表明,高水平的N富集可能会破坏不同树木群落支持土壤微生物生物量的途径,进一步表明树木多样性效应依赖于环境,并受到当地土壤养分状况的影响。我们的结论是,持续的大气氮沉降可能损害生物多样性的恢复努力,降低混交林维持土壤微生物生物量和相关功能的能力。
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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 We do not publish papers concerned solely with cultivated plants and agricultural ecosystems.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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