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学科主题: 生物科学::普通生物学
题名: Effects of warming and grazing on dissolved organic nitrogen in a Tibetan alpine meadow ecosystem
作者: 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
通讯作者: Jiang, LL
刊名: SOIL & TILLAGE RESEARCH
发表日期: 2016
DOI: 10.1016/j.still.2015.12.012
卷: 158, 期:0, 页:156-164
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: The 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.
语种: 英语
WOS记录号: WOS:000373244700016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7713
Appears in Collections:图书馆_期刊论文

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作者单位: 1.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:
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.
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文件名: V.158 156-164 2016.pdf
格式: Adobe PDF
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