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Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland

文献类型：期刊论文

作者Li, Shijie1; Wang, Fuwei1; Chen, Mengfei1; Liu, Zhengyi1; Zhou, Luyao1; Deng, Jun4; Dong, Changjun4; Bao, Guocheng4; Bai, Tongshuo1; Li, Zhen1
刊名ENVIRONMENTAL RESEARCH LETTERS
出版日期2020-07-01
卷号15期号:7页码:11
ISSN号1748-9326
关键词Nitrogen fertilization mowing plant stoichiometry plant community structure plant diversity photosynthetic active radiation gross ecosystem productivity
DOI10.1088/1748-9326/ab8a87
通讯作者Qiu, Yunpeng(yunpeng_qiu@njau.edu.cn)
英文摘要Land-use practices such as mowing and nitrogen (N) fertilization can have significant impacts on plant stoichiometry. However, the interactive effects of mowing and N fertilization on the community-level plant stoichiometry and the underlying processes are not well understood. We examined the impacts of mowing (once a year) and N fertilization (12 g N m(-2)yr(-1)) on the community-level plant stoichiometry in a semi-arid grassland on the Loess Plateau. Results obtained showed that mowing alone had no effect on the community-level plant N or phosphorus (P) concentration. N fertilization alone significantly reduced the community-level plant P concentration, but did not affect the community-level plant N concentration, leading to an enhancement of plant N:P ratio. However, mowing altered the effects of N fertilization, leading to a higher plant N (and P) concentration than the fertilization-only plots. Also, mowing significantly reduced soil nitrate (NO3-), but increased soil temperature, photosynthetic active radiation, plant diversity, richness and gross ecosystem productivity. In addition, mowing and N fertilization significantly affected plant community composition through shifting dominant plant functional groups (PFGs) (e.g. asteraceae, forbs and grass). Further, our structural equation modeling analysis showed that shifts in PFGs played an important role in regulating plant stoichiometry under mowing and N fertilization. Together, these results illustrate that effective management of mowing and N fertilization may induce changes in soil limiting nutrients and shifts in plant community composition, potentially altering plant N:P stoichiometry at the community level.
WOS关键词LOESS PLATEAU ; SOIL RESPIRATION ; SPECIES LOSS ; RESPONSES ; PHOSPHORUS ; DIVERSITY ; FERTILIZATION ; PRODUCTIVITY ; TERRESTRIAL ; DEPOSITION
资助项目National Key R&D Program of China[2017YFC0503902] ; National Science Foundation of China[41671269]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000549163700001
资助机构National Key R&D Program of China ; National Science Foundation of China
源URL[http://ir.ieecas.cn/handle/361006/15065]  
专题地球环境研究所_生态环境研究室
通讯作者Qiu, Yunpeng
作者单位1.Nanjing Agr Univ, Coll Resources & Environm Sci, Ecosyst Ecol Lab, Nanjing 210018, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, Xian 710061, Peoples R China
3.North Carolina State Univ, Dept Entomol & Plant Pathol, Raleigh, NC 27695 USA
4.Ningxia Yunwu Mt Grassland Nat Reserve Adm, Guyuan 756000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shijie,Wang, Fuwei,Chen, Mengfei,et al. Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(7):11.
APA Li, Shijie.,Wang, Fuwei.,Chen, Mengfei.,Liu, Zhengyi.,Zhou, Luyao.,...&Hu, Shuijin.(2020).Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland.ENVIRONMENTAL RESEARCH LETTERS,15(7),11.
MLA Li, Shijie,et al."Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland".ENVIRONMENTAL RESEARCH LETTERS 15.7(2020):11.

入库方式： OAI收割

来源：地球环境研究所

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