Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau

NWIPB OpenIR

	Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau
	Wang, Guanqin; Li, Fei; Peng, Yunfeng; Yu, Jianchun; Zhang, Dianye; Yang, Guibiao; Fang, Kai; Wang, Jun; Mohammat, Anwar; Zhou, Guoying; Yang, Yuanhe
	2019
发表期刊	ENVIRONMENTAL RESEARCH LETTERS
卷号	14 期号:9
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.
关键词	climate warming meta-analysis carbon cycle carbon-climate feedback alpine ecosystem arctic ecosystem
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/59711
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wang, Guanqin,Li, Fei,Peng, Yunfeng,et al. Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(9).
APA	Wang, Guanqin.,Li, Fei.,Peng, Yunfeng.,Yu, Jianchun.,Zhang, Dianye.,...&Yang, Yuanhe.(2019).Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,14(9).
MLA	Wang, Guanqin,et al."Responses of soil respiration to experimental warming in an alpine steppe on the Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 14.9(2019).