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An integrated belowground trait-based understanding of nitrogen-driven plant diversity loss

文献类型：期刊论文

作者Tian, Qiuying1; Lu, Peng1; Zhai, Xiufeng1,2; Zhang, Ruifang3; Zheng, Yao1,2; Wang, Hong3; Nie, Bao1; Bai, Wenming1; Niu, Shuli4; Shi, Peili4
刊名GLOBAL CHANGE BIOLOGY
出版日期2022-03-14
页码14
ISSN号1354-1013
关键词belowground trait competitive exclusion environmental tolerance grassland ecosystem N deposition plant diversity loss rhizosphere microhabitat
DOI10.1111/gcb.16147
通讯作者Stevens, Carly(c.stevens@lancaster.ac.uk) ; Zhang, Wen-Hao(whzhang@ibcas.ac.cn)
英文摘要Belowground plant traits play important roles in plant diversity loss driven by atmospheric nitrogen (N) deposition. However, the way N enrichment shapes plant microhabitats by patterning belowground traits and finally determines aboveground responses is poorly understood. Here, we investigated the rhizosheath trait of 74 plant species in seven N-addition simulation experiments across multiple grassland ecosystems in China. We found that rhizosheath formation differed among plant functional groups and contributed to changes in plant community composition induced by N enrichment. Compared with forb species, grass and sedge species exhibited distinct rhizosheaths; moreover, grasses and sedges expanded their rhizosheaths with increasing N-addition rate which allowed them to colonize belowground habitats. Grasses also shaped a different microenvironment around their roots compared with forbs by affecting the physicochemical, biological, and stress-avoiding properties of their rhizosphere soil. Rhizosheaths act as a "biofilm-like shield" by the accumulation of protective compounds, carboxylic anions and polysaccharides, determined by both plants and microorganisms. This enhanced the tolerance of grasses and sedges to stresses induced by N enrichment. Conversely, forbs lacked the protective rhizosheaths which renders their roots sensitive to stresses induced by N enrichment, thus contributing to their disappearance under N-enriched conditions. This study uncovers the processes by which belowground facilitation and trait matching affect aboveground responses under conditions of N enrichment, which advances our mechanistic understanding of the contribution of competitive exclusion and environmental tolerance to plant diversity loss caused by N deposition.
WOS关键词ALUMINUM TOLERANCE ; SPECIES RICHNESS ; CAMPOS-RUPESTRES ; SOIL ; DEPOSITION ; COMPETITION ; IMPACT ; MECHANISMS ; RHIZOSHEATH ; ACQUISITION
资助项目National Natural Science Foundation of China[31830011] ; National Natural Science Foundation of China[31870457]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
出版者WILEY
WOS记录号WOS:000768550300001
资助机构National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/171732]  
专题中国科学院地理科学与资源研究所
通讯作者Stevens, Carly; Zhang, Wen-Hao
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
3.Agr Univ Hebei, Mt Area Res Inst, Baoding, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
5.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China
6.Minist Agr & Rural Affairs, Agroenvironm Protect Inst, Tianjin, Peoples R China
7.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
8.Univ Western Australia, Sch Biol Sci, Perth, WA, Australia
9.Univ Western Australia, Inst Agr, Perth, WA, Australia
10.China Agr Univ, Natl Acad Green Agr, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Qiuying,Lu, Peng,Zhai, Xiufeng,et al. An integrated belowground trait-based understanding of nitrogen-driven plant diversity loss[J]. GLOBAL CHANGE BIOLOGY,2022:14.
APA Tian, Qiuying.,Lu, Peng.,Zhai, Xiufeng.,Zhang, Ruifang.,Zheng, Yao.,...&Zhang, Wen-Hao.(2022).An integrated belowground trait-based understanding of nitrogen-driven plant diversity loss.GLOBAL CHANGE BIOLOGY,14.
MLA Tian, Qiuying,et al."An integrated belowground trait-based understanding of nitrogen-driven plant diversity loss".GLOBAL CHANGE BIOLOGY (2022):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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