气候变化领域集成服务门户(CCPortal): Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland

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DOI	10.1088/1748-9326/ab8a87
	Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland
	Li S.; Wang F.; Chen M.; Liu Z.; Zhou L.; Deng J.; Dong C.; Bao G.; Bai T.; Li Z.; Guo H.; Wang Y.; Qiu Y.; Hu S.
发表日期	2020
ISSN	17489318
卷号	15 期号:7
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. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	gross ecosystem productivity; mowing; Nitrogen fertilization; photosynthetic active radiation; plant community structure; plant diversity; plant stoichiometry
语种	英语
scopus关键词	Land use; Nitrogen; Nitrogen fertilizers; Soils; Effective management; Gross ecosystem productivities; Interactive effect; N:p stoichiometries; Photosynthetic active radiations; Plant functional groups; Semi-arid grasslands; Structural equation modeling; Stoichiometry; community composition; concentration (composition); fertilizer application; grassland; land use; plant community; semiarid region; soil nutrient; species diversity; species richness; stoichiometry; China; Loess Plateau; Asteraceae; Embryophyta
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153935
作者单位	Ecosystem Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210018, China; Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695, United States; Ningxia Yunwu Mountains Grassland Natural Reserve Administration, Guyuan, 756000, China
推荐引用方式 GB/T 7714	Li S.,Wang F.,Chen M.,et al. Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland[J],2020,15(7).
APA	Li S..,Wang F..,Chen M..,Liu Z..,Zhou L..,...&Hu S..(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).
MLA	Li S.,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).