气候变化领域集成服务门户(CCPortal): Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau

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DOI	10.1088/1748-9326/ab3bbc
	Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau
	Wang G.; Li F.; Peng Y.; Yu J.; Zhang D.; Yang G.; Fang K.; Wang J.; Mohammat A.; Zhou G.; Yang Y.
发表日期	2019
ISSN	17489318
卷号	14 期号:9
英文摘要	High-latitude and high-altitude ecosystems store large amounts of carbon (C) and play a vital role in the global C cycle. Soil respiration (R S) in these ecosystems is believed to be extremely sensitive to climate warming and could potentially trigger positive C-climate feedback. However, this evidence is largely derived from wet ecosystems, with limited observations from dry ecosystems. Here, we explored the responses of R S, autotrophic (R A), and heterotrophic (R H) respiration under experimental warming in a dry ecosystem, an alpine steppe on the Tibetan Plateau. We assessed the effects of soil temperature and moisture dynamics on R S, R A, and R H and performed a meta-analysis to examine whether the warming effects observed were similar to those reported in wet ecosystems, including Tibetan alpine meadow and arctic ecosystem. Experimental warming did not alter R S, R A, and R H in this alpine steppe, likely because decreased soil moisture constrained positive warming effects. In contrast, the meta-analysis revealed that R S exhibited a significant increase under experimental warming in both the Tibetan alpine meadow and arctic wet tundra. These results demonstrate that R S exhibits different responses to climate warming between dry and wet ecosystems, suggesting potential more complex C-climate feedback in cold regions. © 2019 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Soil moisture; Climate feedbacks; Climate warming; High Latitudes; Limited observations; Moisture dynamics; Soil respiration; Soil temperature; Tibetan Plateau; Ecosystems; alpine environment; carbon cycle; climate feedback; experimental study; meadow; meta-analysis; soil moisture; soil respiration; soil temperature; steppe; tundra; warming; China; Qinghai-Xizang Plateau
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154385
作者单位	State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, 810008, China
推荐引用方式 GB/T 7714	Wang G.,Li F.,Peng Y.,et al. Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau[J],2019,14(9).
APA	Wang G..,Li F..,Peng Y..,Yu J..,Zhang D..,...&Yang Y..(2019).Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau.Environmental Research Letters,14(9).
MLA	Wang G.,et al."Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau".Environmental Research Letters 14.9(2019).