IB-CAS  > 植被与环境变化国家重点实验室
Temporal variability of foliar nutrients: responses to nitrogen deposition and prescribed fire in a temperate steppe
Lu, Xiao-Tao; Reed, Sasha1; Hou, Shuang-Li; Hu, Yan-Yu; Wei, Hai-Wei; Lu, Fu-Mei; Cui, Qiang; Han, Xing-Guo
AbstractPlant nutrient concentrations and stoichiometry drive fundamental ecosystem processes, with important implications for primary production, diversity, and ecosystem sustainability. While a range of evidence exists regarding how plant nutrients vary across spatial scales, our understanding of their temporal variation remains less well understood. Nevertheless, we know nutrients regulate plant function across time, and that important temporal controls could strongly interact with environmental change. Here, we report results from a 3-year assessment of inter-annual changes of foliar nitrogen (N) and phosphorus (P) concentrations and stoichiometry in three dominant grasses in response to N deposition and prescribed fire in a temperate steppe of northern China. Foliar N and P concentrations and their ratios varied greatly among years, with this temporal variation strongly related to inter-annual variation in precipitation. Nitrogen deposition significantly increased foliar N concentrations and N:P ratios in all species, while fire significantly altered foliar N and P concentrations but had no significant impacts on N:P ratios. Generally, N addition enhanced the temporal stability of foliar N and decreased that of foliar P and of N:P ratios. Our results indicate that plant nutrient status and response to environmental change are temporally dynamic and that there are differential effects on the interactions between environmental change drivers and timing for different nutrients. These responses have important implications for consideration of global change effects on plant community structure and function, management strategies, and the modeling of biogeochemical cycles under global change scenarios.
KeywordEcological stoichiometry Ecosystem stability Inter-annual variation N:P ratio Nutrient limitation Primary productivity Semiarid grassland
Subject AreaPlant Sciences ; Environmental Sciences & Ecology ; Forestry
Indexed BySCI
WOS IDWOS:000397126800007
Publication PlaceDORDRECHT
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470505] ; National Key Research and Development Program [2016YFC0500601, 2015CB150802] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDB15010403] ; Youth Innovation Promotion Association CAS [2014174] ; Key Research Program from CAS [QYZDB-SSW-DQC006, KFZD-SW-305-002]
Corresponding Author Emaillvxiaotao@iae.ac.cn
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Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China
2.US Geol Survey, Southwest Biol Sci Ctr, 2290 SW Resource Blvd, Moab, UT 84532 USA
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
Recommended Citation
GB/T 7714
Lu, Xiao-Tao,Reed, Sasha,Hou, Shuang-Li,et al. Temporal variability of foliar nutrients: responses to nitrogen deposition and prescribed fire in a temperate steppe[J]. BIOGEOCHEMISTRY,2017,133(3):295-305.
APA Lu, Xiao-Tao.,Reed, Sasha.,Hou, Shuang-Li.,Hu, Yan-Yu.,Wei, Hai-Wei.,...&Han, Xing-Guo.(2017).Temporal variability of foliar nutrients: responses to nitrogen deposition and prescribed fire in a temperate steppe.BIOGEOCHEMISTRY,133(3),295-305.
MLA Lu, Xiao-Tao,et al."Temporal variability of foliar nutrients: responses to nitrogen deposition and prescribed fire in a temperate steppe".BIOGEOCHEMISTRY 133.3(2017):295-305.
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