文献类型： 外文期刊
作者： Hu, Zonghao 1 ; Fan, Yi 1 ; Yang, Junjie 3 ; Pang, Shuang 1 ; Mao, Rong 4 ; Zhang, Yang 4 ; Han, Xingguo 5 ; Zhang, Ximei 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Minist Agr, Key Lab Dryland Agr, Beijing 100081, Peoples R China
2.CAU, State Key Lab Efficient Utilizat Agr Water Resouce, CAAS, Beijing, Peoples R China
3.Chinese Acad Sci, Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China
4.Jiangxi Agr Univ, Coll Forestry, 1101 Zhimin Rd, Nanchang 330045, Peoples R China
5.Hebei Univ, Sch Life Sci, Inst Life Sci & Green Dev, Baoding 071002, Hebei, Peoples R China
关键词： Biomass; Plant-microbe interactions; Productivity; Network; Nitrogen enrichment
期刊名称：GEODERMA （ 影响因子：6.6； 五年影响因子：7.3 ）
ISSN： 0016-7061
年卷期： 2025 年 460 卷
页码：
收录情况： SCI
摘要： Nitrogen deposition can reduce plant and soil microbial diversity, and thus, it was traditionally thought to decouple plant-microbe interactions. However, few studies quantified these interactions directly and systematically. Here, we conducted a long-term nitrogen deposition experiment with nine rates (0-50 g nitrogen m-2 yr-1) in the Eurasian steppe. Although nitrogen addition reduced biodiversity, it strengthened the relationships between plant and microbial community indices (biomass, richness, and composition) in a structural equation model, increased the Pearson's correlation coefficient (r) between plant biomass and microbial biomass, and also increased the density of the plant-microbe interaction subnetwork. These results challenge the traditional decoupling viewpoint and indicate that plant-microbe interactions strengthen to adapt to increasing nitrogen deposition pressure.
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