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Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem
Jiang, LL (Jiang, Lili)1; Wang, SP (Wang, Shiping)1,3; Luo, CY (Luo, Caiyun)2; Zhu, XX (Zhu, Xiaoxue)2; Kardol, P (Kardol, Paul)4; Zhang, ZH (Zhang, Zhenhua)2; Li, YM (Li, Yaoming)1; Wang, CS (Wang, Changshun)1; Wang, YF (Wang, Yanfen)5; Jones, DL (Jones, Davey L.)6; Jiang, LL
Source PublicationSOIL & TILLAGE RESEARCH
2016
Volume158Issue:0Pages:156-164
DOI10.1016/j.still.2015.12.012
AbstractThe production and fate of inorganic N as regulated by environmental change are relatively well understood, but we know comparatively little about how these factors influence dissolved organic nitrogen (DON). We measured total N, DON and dissolved inorganic nitrogen (DIN) concentrations in the soil solution and plant N uptake in a factorial warming x grazing experiment in a Tibetan alpine meadow. Results showed that warming significantly decreased DON concentration by up to 36%. The effect of warming on DON concentration in the soil solution varied with sampling date and soil depth. However, our results showed that moderate grazing set off the effect of warming on DON concentration in the soil solution. Grazing increased soil DON, opposite to the effect of warming. Previous studies have found warming to increase a range of factors which contribute to the supply of DON in soil. Our results show that the observed decrease of DON under warming was correlated with plant N uptake, suggesting that warming stimulated processes making DON available to plants. Our study highlights the complex interaction of land management regime and climate warming in the regulation of DON cycling in N limiting environments. (C) 2016 Elsevier B.V. All rights reserved.
Subject Area普通生物学
WOS IDWOS:000373244700016
Language英语
Indexed BySCI
KeywordTemperate Forest Inner-mongolia Climate-change Soil Microbes Amino-acids Grassland Dynamics Plateau Availability Responses
Cooperation Status国际
Department生态
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7713
Collection图书馆
Corresponding AuthorJiang, LL
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden
5.Univ Chinese Acad Sci, Coll Life Sci & Biol Technol, Beijing 100049, Peoples R China
6.Bangor Univ, Sch Environm Nat Resources & Geog, Bangor LL57 2UW, Gwynedd, Wales
Recommended Citation
GB/T 7714
Jiang, LL ,Wang, SP ,Luo, CY ,et al. Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem[J]. SOIL & TILLAGE RESEARCH,2016,158(0):156-164.
APA Jiang, LL .,Wang, SP .,Luo, CY .,Zhu, XX .,Kardol, P .,...&Jiang, LL.(2016).Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem.SOIL & TILLAGE RESEARCH,158(0),156-164.
MLA Jiang, LL ,et al."Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem".SOIL & TILLAGE RESEARCH 158.0(2016):156-164.
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