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DOI10.1002/ece3.5439
Temperature-mediated responses of carbon fluxes to precipitation variabilities in an alpine meadow ecosystem on the Tibetan Plateau
Chen, Ning1,2; Zhang, Yangjian1,3,4; Zhu, Juntao1; Zu, Jiaxing1,2; Huang, Ke1; Li, Junxiang5; Liu, Yaojie1; Cong, Nan1; Tang, Ze1,2; Wang, Li5; Zhu, Yixuan1,2
发表日期2019
ISSN2045-7758
卷号9期号:16页码:9005-9017
英文摘要

Effects of climate warming and changing precipitation on ecosystem carbon fluxes have been intensively studied. However, how they co-regulate carbon fluxes is still elusive for some understudied ecosystems. To fill the gap, we examined net ecosystem productivity (NEP), gross ecosystem productivity (GEP,) and ecosystem respiration (ER) responses to multilevel of temperature increments (control, warming 1, warming 2, warming 3, warming 4) in three contrasting hydrological growing seasons in a typical semiarid alpine meadow. We found that carbon fluxes responded to precipitation variations more strongly in low-level warming treatments than in high-level ones. The distinct responses were attributable to different soil water conditions and community composition under low-level and high-level warming during the three growing seasons. In addition, carbon fluxes were much more sensitive to decreased than to increased precipitation in low-level warming treatments, but not in high-level ones. At a regional scale, this negative asymmetry was further corroborated. This study reveals that future precipitation changes, particularly decreased precipitation would induce significant change in carbon fluxes, and the effect magnitude is regulated by climate warming size.


WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
来源期刊ECOLOGY AND EVOLUTION
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/100688
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R China;
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China;
5.Peking Univ, Shenzhen Grad Sch, Shenzhen, Peoples R China
推荐引用方式
GB/T 7714
Chen, Ning,Zhang, Yangjian,Zhu, Juntao,et al. Temperature-mediated responses of carbon fluxes to precipitation variabilities in an alpine meadow ecosystem on the Tibetan Plateau[J],2019,9(16):9005-9017.
APA Chen, Ning.,Zhang, Yangjian.,Zhu, Juntao.,Zu, Jiaxing.,Huang, Ke.,...&Zhu, Yixuan.(2019).Temperature-mediated responses of carbon fluxes to precipitation variabilities in an alpine meadow ecosystem on the Tibetan Plateau.ECOLOGY AND EVOLUTION,9(16),9005-9017.
MLA Chen, Ning,et al."Temperature-mediated responses of carbon fluxes to precipitation variabilities in an alpine meadow ecosystem on the Tibetan Plateau".ECOLOGY AND EVOLUTION 9.16(2019):9005-9017.
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