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Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis
Zhang, Hao Rui1,2; Sun, Wei1; Li, Shao Wei1; Han, Fu Song1,2; Yu, Cheng Qun1; Zhang, Xian Zhou1; Wang, Jing Sheng1; He, Yong Tao1; Zhong, Zhi Ming1
2018
Source PublicationPOLISH JOURNAL OF ECOLOGY
ISSN1505-2249
Volume66Issue:4Pages:315-324
Corresponding AuthorZhang, Xian Zhou(zhangxz@igsnrr.ac.cn) ; Wang, Jing Sheng(wangjsh@igsnrr.ac.cn)
AbstractThe general impact of extra nitrogen on ecological stoichiometry was examined in alpine grasslands on the Tibetan Plateau. Extra nitrogen increased the ratio of nitrogen to phosphorus (N:P ratio) in leaves and aboveground parts of plants by 43.4% and 32.7%, respectively. In contrast, extra nitrogen reduced the ratio of carbon to nitrogen (C:N ratio) in leaves by 30.6%. Extra nitrogen decreased soil C:N ratio by 9.1% in alpine meadows, but increased soil C:N ratio by 3.4% in alpine steppes. Extra urea had a stronger positive impact on aboveground vegetation N:P ratio than did extra ammonium nitrate. Extra urea rather than ammonium nitrate decreased aboveground vegetation C:N ratio and soil C:N ratio. The impact of extra nitrogen on aboveground vegetation N:P ratio was positively correlated with latitude, mean annual temperature and precipitation, nitrogen application rate and accumulated amount, but negatively correlated with elevation, duration and aboveground vegetation N:P ratio of the control plots. The impact of extra nitrogen on leaves N:P ratio was positively correlated with nitrogen application rate and accumulated amount. The impact of extra nitrogen on leaves C:N ratio was positively correlated with latitude, but negatively correlated with mean annual temperature and precipitation, nitrogen application rate, accumulated amount, duration and leaves C:N ratio of the control plots. Therefore, nitrogen enrichment caused by human activities will most likely alter element balance and alpine plants from nitrogen limitation to phosphorus limitation. This effect may weaken with time, and increase with climatic warming, increased precipitation and nitrogen input rate.
KeywordC:N ratio C:P ratio N:P ratio eutrophication nitrogen deposition alpine region
DOI10.3161/15052249PJE2018.66.4.001
WOS KeywordGHG FLUX ; MEADOW ; FERTILIZATION ; DEPOSITION ; CARBON ; CO2
Indexed BySCI
Language英语
Funding ProjectNational Key Research Projects of China[2016YFC0502006] ; National Key Research Projects of China[2017YFA0604801] ; National Natural Science Foundation of China[31600432] ; National Natural Science Foundation of China[41571042] ; Tibet Science and Technology Major Projects of Pratacultural Industry
Funding OrganizationNational Key Research Projects of China ; National Natural Science Foundation of China ; Tibet Science and Technology Major Projects of Pratacultural Industry
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000459824900001
PublisherPOLISH ACAD SCIENCES INST ECOLOGY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49490
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Xian Zhou; Wang, Jing Sheng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hao Rui,Sun, Wei,Li, Shao Wei,et al. Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis[J]. POLISH JOURNAL OF ECOLOGY,2018,66(4):315-324.
APA Zhang, Hao Rui.,Sun, Wei.,Li, Shao Wei.,Han, Fu Song.,Yu, Cheng Qun.,...&Zhong, Zhi Ming.(2018).Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis.POLISH JOURNAL OF ECOLOGY,66(4),315-324.
MLA Zhang, Hao Rui,et al."Impact of extra nitrogen on ecological stoichiometry of alpine grasslands on Tibetan Plateau: meta-analysis".POLISH JOURNAL OF ECOLOGY 66.4(2018):315-324.
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