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Consistent responses of litter stoichiometry to N addition across different biological organization levels in a semi-arid grassland
Hou, Shuang-Li; Yin, Jiang-Xia; Yang, Jun-Jie; Wei, Hai-Wei; Yang, Guo-Jiao; Hu, Yan-Yu; Han, Xing-Guo; Lu, Xiao-Tao
Source PublicationPLANT AND SOIL
AbstractChanges in litter chemistry and stoichiometry following N enrichment have important consequences on litter decomposition and plant-mediated nutrient cycling. Our knowledge about the responses of litter stoichiometry at different biological organization levels to N enrichment remains poorly understood. Moreover, whether the impacts of N enrichment on stoichiometric ratios in litter would depend on ecosystem management strategies remains unknown. We examined the effects of N addition and mowing on C:N:P stoichiometry in standing litter at plant organ, species, functional group, and community levels in a semi-arid grassland of northern China, taking advantage of a field experiment that has been running for seven years. Nitrogen addition altered biomass allocation between different organs and among different plant functional groups, with consequences on litter stoichiometry at community level. N addition had no impacts on litter C concentration, increased litter N, and N:P ratio, and decreased litter C:N ratio from plant organ to community. The impacts of N addition on litter P and C:P depended on the identity of plant species and functional group. Mowing did not affect litter nutrient characters across all organization levels. Furthermore, no interactive effects between N addition and mowing on litter nutrient characters were observed from plant organ to community levels. We conclude that N deposition will enhance litter quality even in the heavily-used grasslands with shifts in biomass allocation and species composition, which may contribute to the enhancement of plant-mediating nutrient cycling.
KeywordNutrient cycling Species identity Ecological stoichiometry Litter quality Biomass allocation Community composition Clipping Temperate steppe
Subject AreaPlant Sciences
Indexed BySCI
WOS IDWOS:000395899200004
Publication PlaceDORDRECHT
Funding OrganizationNational Basic Research Program of ChinaNational Basic Research Program of China [2016YFC0500601, 2015CB150802] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770503, 31470505, 31430016] ; 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
OAGreen Submitted, Green Accepted
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.[Hou, Shuang-Li
2.Yang, Jun-Jie
3.Wei, Hai-Wei
4.Yang, Guo-Jiao
5.Hu, Yan-Yu
6.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Liaoning, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Liaoning Univ, Sch Life Sci, Shenyang 110036, Liaoning, Peoples R China
9.[Yang, Jun-Jie
10.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
Recommended Citation
GB/T 7714
Hou, Shuang-Li,Yin, Jiang-Xia,Yang, Jun-Jie,et al. Consistent responses of litter stoichiometry to N addition across different biological organization levels in a semi-arid grassland[J]. PLANT AND SOIL,2017,421(1-2):191-202.
APA Hou, Shuang-Li.,Yin, Jiang-Xia.,Yang, Jun-Jie.,Wei, Hai-Wei.,Yang, Guo-Jiao.,...&Lu, Xiao-Tao.(2017).Consistent responses of litter stoichiometry to N addition across different biological organization levels in a semi-arid grassland.PLANT AND SOIL,421(1-2),191-202.
MLA Hou, Shuang-Li,et al."Consistent responses of litter stoichiometry to N addition across different biological organization levels in a semi-arid grassland".PLANT AND SOIL 421.1-2(2017):191-202.
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