IGSNRR OpenIR  > 历年回溯文献
Nitrogen acquisition strategies used by Leymus chinensis and Stipa grandis in temperate steppes
Wang R. X.; Tian, Y. Q.; Ouyang, S. N.; Xu, X. L.; Xu, F. Z.; Zhang, Y.
Source PublicationBiology and Fertility of Soils
2016
Volume52
Issue7
Pages951-961
KeywordOrganic nitrogen Nitrogen acquisition strategies Life form Monodominant community Temperate steppes perennial ranunculus-repens organic-nitrogen soil microbes ectomycorrhizal plants niche complementarity local specialization population-dynamics inorganic nitrogen mycorrhizal fungi root competition
AbstractLeymus chinensis and Stipa grandis are two important plant species of temperate steppes in Inner Mongolia of North China. They differ in their life forms, e.g., L. chinensis is a type of rhizomatous clonal grass, whereas S. grandis is a type of tussock grass. Here we hypothesize that both plant species possess distinct nitrogen (N) acquisition strategies for their growth and survival. To test this hypothesis, we conducted a four-factor experimental field study using a short-term (three hours) N-15 labeling technique in two plant communities mono-dominated by L. chinensis and S. grandis of the temperate steppes over two months (July and August) and at two soil depths. In both of communities, L. chinensis and S. grandis directly absorbed all three of the common forms of N, including substantial portions of N-derived from glycine (organic and inorganic forms) ranged from 2.7 to 17.8 %, although they absorbed more inorganic N. Nitrogen uptake rates showed significant effects of communities, months, soil depths, and N forms. The uptake rate was higher in August than in July and at 0-5 cm than at 5-15 cm soil depths. L. chinensis and S. grandis showed different preference on N form across months. L. chinensis shifted its uptake pattern from more nitrate (NO3 (-)) in July to more ammonium (NH4 (+)) in August, whereas S. grandis took up comparable NH4 (+) and NO3 (-) in both months. In general, L. chinensis showed a more flexible N acquisition strategy and S. grandis performed a more concentrated and relatively more stable N acquisition strategy. The distinct N acquisition strategies used by L. chinensis and S. grandis varied greatly across different months and soil depths. These findings are more helpful in further understanding the plasticity of nutrient utilization issues of different plant species in response to N-limited conditions of grassland ecosystems.
Indexed BySCI
Language英语
ISSN0178-2762
DOI10.1007/s00374-016-1128-2
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43276
Collection历年回溯文献
Recommended Citation
GB/T 7714
Wang R. X.,Tian, Y. Q.,Ouyang, S. N.,et al. Nitrogen acquisition strategies used by Leymus chinensis and Stipa grandis in temperate steppes. 2016.
Files in This Item: Download All
File Name/Size DocType Version Access License
Wang-2016-Nitrogen a(769KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang R. X.]'s Articles
[Tian, Y. Q.]'s Articles
[Ouyang, S. N.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang R. X.]'s Articles
[Tian, Y. Q.]'s Articles
[Ouyang, S. N.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang R. X.]'s Articles
[Tian, Y. Q.]'s Articles
[Ouyang, S. N.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Wang-2016-Nitrogen acquisition.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.