干旱区生态环境知识资源中心(Arid): Nitrogen and phosphorus addition differentially affect plant ecological stoichiometry in desert grassland

Arid

DOI	10.1038/s41598-019-55275-8
	Nitrogen and phosphorus addition differentially affect plant ecological stoichiometry in desert grassland
	Li, Lei 1,2,5; Liu, Bo 3; Gao, Xiaopeng 1,2,4,5; Li, Xiangyi 1,2,5; Li, Chengdao 1,2,5
通讯作者	Li, Lei
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2019
卷号	9
英文摘要	Plant C:N:P stoichiometric relations drive powerful constraints on ecological interactions and processes. However, information about plant stoichiometric responses to N and P availability in desert grassland is limited. We conducted two field experiments with 7 levels of N (from 0.5 g to 24g N . m(-2) yr(-1)) and P (from 0.05 g to 3.2 g P . m(-2) yr(-1)) additions in a desert grassland of Kunlun Mountain in the northwest of China to investigate the effects of these addition rates on the N and P stoichiometry of the dominant grass species Seriphidium korovinii. Nitrogen and P additions both affected plant stoichiometry. N addition suppressed P concentrations, whereas P addition had no effect on plant N concentrations. The N:P ratios of green aboveground biomass (AGB) were positively correlated with N addition ranging from 14.73 to 29.08, whereas those for P additions decreased ranging from 14.73 to 8.29. N concentrations were positively correlated with soil available N:P ratios, whereas, P concentrations were negatively correlated with soil availably N:P. Our results suggest that chemistry and stoichiometry of S. korovinii was directly affected by soil nutrient availability. Soil N availability affects S. korovinii stoichiometry to a greater extent that does soil P availability in this ecosystem. These findings suggest that N-deposition could affect the stoichiometry of this desert grassland ecosystem, and thereby potentially alter litter decomposition, plant community composition, nutrient cycling, and food-web dynamics of these desert ecosystems.
类型	Article
语种	英语
国家	Peoples R China ; Canada
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000502001900001
WOS关键词	N-P RATIOS ; LITTER DECOMPOSITION ; DEPOSITION ; RESORPTION ; LIMITATION ; CARBON ; AVAILABILITY ; FORESTS ; QUALITY ; DEMAND
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
EI主题词	2019-12-10
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311654
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Xinjiang, Peoples R China; 3.Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Soil Conservat & Environm P, Linyi 276000, Shandong, Peoples R China; 4.Univ Manitoba, Dept Soil Sci, Winnipeg, MB, Canada; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Lei,Liu, Bo,Gao, Xiaopeng,et al. Nitrogen and phosphorus addition differentially affect plant ecological stoichiometry in desert grassland[J]. 中国科学院新疆生态与地理研究所,2019,9.
APA	Li, Lei,Liu, Bo,Gao, Xiaopeng,Li, Xiangyi,&Li, Chengdao.(2019).Nitrogen and phosphorus addition differentially affect plant ecological stoichiometry in desert grassland.SCIENTIFIC REPORTS,9.
MLA	Li, Lei,et al."Nitrogen and phosphorus addition differentially affect plant ecological stoichiometry in desert grassland".SCIENTIFIC REPORTS 9(2019).