气候变化领域集成服务门户(CCPortal): Alpine soil carbon is vulnerable to rapid microbial decomposition under climate cooling

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DOI	10.1038/ismej.2017.75
	Alpine soil carbon is vulnerable to rapid microbial decomposition under climate cooling
	Wu, Linwei; Yang, Yunfeng; Wang, Shiping; Yue, Haowei; Lin, Qiaoyan; Hu, Yigang; He, Zhili; Van Nostrand, Joy D.; Hale, Lauren; Li, Xiangzhen; Gilbert, Jack A.; Zhou, Jizhong
通讯作者	Yang, YF (通讯作者)
发表日期	2017
ISSN	1751-7362
EISSN	1751-7370
起始页码	2102
结束页码	2111
卷号	11 期号:9
英文摘要	As climate cooling is increasingly regarded as important natural variability of long-term global warming trends, there is a resurging interest in understanding its impact on biodiversity and ecosystem functioning. Here, we report a soil transplant experiment from lower to higher elevations in a Tibetan alpine grassland to simulate the impact of cooling on ecosystem community structure and function. Three years of cooling resulted in reduced plant productivity and microbial functional potential (for example, carbon respiration and nutrient cycling). Microbial genetic markers associated with chemically recalcitrant carbon decomposition remained unchanged despite a decrease in genes associated with chemically labile carbon decomposition. As a consequence, cooling-associated changes correlated with a decrease in soil organic carbon (SOC). Extrapolation of these results suggests that for every 1 degrees C decrease in annual average air temperature, 0.1 Pg (0.3%) of SOC would be lost from the Tibetan plateau. These results demonstrate that microbial feedbacks to cooling have the potential to differentially impact chemically labile and recalcitrant carbon turnover, which could lead to strong, adverse consequences on soil C storage. Our findings are alarming, considering the frequency of short-term cooling and its scale to disrupt ecosystems and biogeochemical cycling.
关键词	TIBETAN GRASSLANDS ORGANIC-MATTER TEMPERATURE SENSITIVITY METHANE FLUXES NITROUS-OXIDE FOREST SOIL GAS FLUXES RESPONSES ECOSYSTEM FEEDBACK
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Microbiology
WOS类目	Ecology ; Microbiology
WOS记录号	WOS:000407804100014
来源期刊	ISME JOURNAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259095
推荐引用方式 GB/T 7714	Wu, Linwei,Yang, Yunfeng,Wang, Shiping,et al. Alpine soil carbon is vulnerable to rapid microbial decomposition under climate cooling[J]. 中国科学院青藏高原研究所,2017,11(9).
APA	Wu, Linwei.,Yang, Yunfeng.,Wang, Shiping.,Yue, Haowei.,Lin, Qiaoyan.,...&Zhou, Jizhong.(2017).Alpine soil carbon is vulnerable to rapid microbial decomposition under climate cooling.ISME JOURNAL,11(9).
MLA	Wu, Linwei,et al."Alpine soil carbon is vulnerable to rapid microbial decomposition under climate cooling".ISME JOURNAL 11.9(2017).