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Effects of short-term nitrogen and phosphorus addition on leaf stoichiometry of a dominant alpine grass

文献类型：期刊论文

作者Liu, YaLan1,2,3,4; Liu, Bo5; Yue, Zewei4,6; Zeng, Fanjiang1,2,3,4; Li, Xiangyi1,2,3,4; Li, Lei1,2,3,4
刊名PEERJ
出版日期2021-12-22
卷号9页码:17
ISSN号2167-8359
关键词Nutrient addition Leaf nutrient concentration Leaf stoichiometry Alpine grazing grassland
DOI10.7717/peerj.12611
通讯作者Li, Lei(lilei@ms.xjb.ac.cn)
英文摘要The effects of increasing nitrogen (N) and phosphorus (P) deposition on the nutrient stoichiometry of soil and plant are gaining improving recognition. However, whether and how the responses of N cycle coupled with P of the soil-plant system to external N and P deposition in alpine grassland is still unclear. A short-term external N and P addition experiment was conducted in an alpine grazing grassland in the KunLun Mountain to explore the effects of short-term N and P addition on the nutrient stoichiometry in soil and plant. Different rates of N addition (ranging from 0.5 g N m(-2) yr(-1) to 24 g N m(-2) yr(-1)) and P addition (ranging from 0.05 g N m(-2) yr(-1) to 3.2 g P m(-2) yr(-1)) were supplied, and the soil available N, P, leaf N and P stoichiometry of Seriphidium rhodanthum which dominant in the alpine ecosystem were measured. Results showed that N addition increased soil inorganic N, leaf C, leaf N, and leaf N:P ratio but decreased soil available P and leaf C:P. Furthermore, P addition increased soil available P, leaf P, soil inorganic N, leaf N, and leaf C and reduced leaf C:N, C:P, and N:P ratios. Leaf N:P was positively related to N addition gradient. Leaf C:P and leaf N:P were significantly negatively related to P addition gradient. Although external N and P addition changed the value of leaf N:P, the ratio was always lower than 16 in all treatments. The influences of P addition on soil and plant mainly caused the increase in soil available P concentration. In addition, the N and P cycles in the soil-plant system were tightly coupled in P addition but decoupled in N addition condition. The nutrient stoichiometry of soil and leaf responded differently to continuous N and P addition gradients. These data suggested that the alpine grazing grassland was limited by P rather than N due to long-term N deposition and uniform fertilization. Moreover, increasing P addition alleviated P limitation. Therefore, the imbalanced N and P input could change the strategy of nutrient use of the grass and then change the rates of nutrient cycling in the alpine grassland ecosystem in the future.
WOS关键词N-P RATIOS ; NUTRIENT LIMITATION ; TERRESTRIAL ECOSYSTEMS ; LITTER DECOMPOSITION ; BIOMASS PRODUCTION ; FOLIAR NITROGEN ; DEPOSITION ; RESORPTION ; RESPONSES ; CHINA
资助项目National Natural Science Foundation of China[41807335] ; Shandong Provincial Natural Science Foundation[ZR2020MC040] ; Shandong Provincial Natural Science Foundation[ZR2017MC029] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2020434] ; National Postdoctoral Program for Innovative Talents[BX201700279]
WOS研究方向Science & Technology - Other Topics
语种英语
出版者PEERJ INC
WOS记录号WOS:000736965400004
资助机构National Natural Science Foundation of China ; Shandong Provincial Natural Science Foundation ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Postdoctoral Program for Innovative Talents
源URL[http://ir.igsnrr.ac.cn/handle/311030/169121]  
专题中国科学院地理科学与资源研究所
通讯作者Li, Lei
作者单位1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Urumqi, Peoples R China
2.Cele Natl Stn Observat & Res Desert Grassland Eco, Cele, Xinjiang, Peoples R China
3.Chinese Acad Sci, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Soil Conservat & Environm P, Linyi, Shandong, Peoples R China
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, YaLan,Liu, Bo,Yue, Zewei,et al. Effects of short-term nitrogen and phosphorus addition on leaf stoichiometry of a dominant alpine grass[J]. PEERJ,2021,9:17.
APA Liu, YaLan,Liu, Bo,Yue, Zewei,Zeng, Fanjiang,Li, Xiangyi,&Li, Lei.(2021).Effects of short-term nitrogen and phosphorus addition on leaf stoichiometry of a dominant alpine grass.PEERJ,9,17.
MLA Liu, YaLan,et al."Effects of short-term nitrogen and phosphorus addition on leaf stoichiometry of a dominant alpine grass".PEERJ 9(2021):17.

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来源：地理科学与资源研究所

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