CCPortal
DOI10.1002/ece3.4658
Nonlinear response of ecosystem respiration to multiple levels of temperature increases
Chen, Ning1,2; Zhu, Juntao1; Zhang, Yangjian1,3,4; Liu, Yaojie1; Li, Junxiang5; Zu, Jiaxing1,2; Huang, Ke1
发表日期2019
ISSN2045-7758
卷号9期号:3页码:925-937
英文摘要

Global warming exerts profound impacts on terrestrial carbon cycles and feedback to climates. Ecosystem respiration (ER) is one of the main components of biosphere CO2 fluxes. However, knowledge regarding how ER responds to warming is still lacking. In this study, a manipulative experiment with five simulated temperature increases (+0? [Control], +2.1? [warming 1, W1], +2.7? [warming 2, W2], +3.2? [warming 3, W3], +3.9? [warming 4, W4]) was conducted to investigate ER responses to warming in an alpine meadow on the Tibetan Plateau. The results showed that ER was suppressed by warming both in dry and wet years. The responses of ER to warming all followed a nonlinear pattern. The nonlinear processes can be divided into three stages, the quick-response stage (W1), stable stage (W1-W3), and transition stage (W4). Compared with the nonlinear model, the linear model maximally overestimated the response ratios of ER to warming 2.2% and 3.2% in 2015 and 2016, respectively, and maximally underestimated the ratio 7.0% and 2.7%. The annual differences in ER responding to warming were mainly attributed to the distinct seasonal distribution of precipitation. Specially, we found that the abrupt shift response of ER to warming under W4 treatment in 2015, which might be regulated by the excitatory effect of precipitation after long-term drought in the mid-growing season. This study highlights the importance of the nonlinearity of warming effects on ER, which should be taken into the global-C-cycling models for better predicting future carbon-climate feedbacks.


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/92322
作者单位1.Chinese Acad Sci, Lhasa Plateau Ecosyst Res Stn, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, 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,Zhu, Juntao,Zhang, Yangjian,et al. Nonlinear response of ecosystem respiration to multiple levels of temperature increases[J],2019,9(3):925-937.
APA Chen, Ning.,Zhu, Juntao.,Zhang, Yangjian.,Liu, Yaojie.,Li, Junxiang.,...&Huang, Ke.(2019).Nonlinear response of ecosystem respiration to multiple levels of temperature increases.ECOLOGY AND EVOLUTION,9(3),925-937.
MLA Chen, Ning,et al."Nonlinear response of ecosystem respiration to multiple levels of temperature increases".ECOLOGY AND EVOLUTION 9.3(2019):925-937.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, Ning]的文章
[Zhu, Juntao]的文章
[Zhang, Yangjian]的文章
百度学术
百度学术中相似的文章
[Chen, Ning]的文章
[Zhu, Juntao]的文章
[Zhang, Yangjian]的文章
必应学术
必应学术中相似的文章
[Chen, Ning]的文章
[Zhu, Juntao]的文章
[Zhang, Yangjian]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。