Elevated CO(2)decreases soil carbon stability in Tibetan Plateau

doi:10.1088/1748-9326/abbb50

	Elevated CO(2)decreases soil carbon stability in Tibetan Plateau
	Zhao, Guang ; Liang, Chao 1; Feng, Xiaojuan2,3 ; Liu, Lingli2,3 ; Zhu, Juntao ; Chen, Ning 4; Chen, Yao 4; Wang, Li 5; Zhang, Yangjian 3,6
	2020
发表期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
卷号	15 期号:11
摘要	The lack of ecosystem-scale CO(2)enrichment experiments in alpine regions considerably restricts our ability to predict the feedback of the global carbon (C) cycle to climate change. Here we investigate soil C response in an experiment with 5-year CO(2)enrichment and nitrogen (N) fertilization in a Tibetan meadow (4585 m above the sea level). We found that despite non-significant increase in bulk soil C pool, elevated CO(2)dramatically altered the allocation of C in different soil fractions and soil mineralization potentials. By changing soil microbial composition and enhancing enzyme activities, elevated CO(2)significantly accelerated soil organic matter (SOM) mineralization rates and stimulated the microbial utilization of 'old C' relative to that of 'new C'. Furthermore, N fertilization under elevated CO(2)altered the decomposition process, increased the fungi to bacteria ratio, and decreased the coarse particulate organic matter pool and enzyme activities, indicating that N fertilization counters the CO(2)fertilization effect. Overall, our findings suggest a growing threat of elevated CO(2)in reducing SOM stability, and highlight the key role of N availability in driving soil C turnover under elevated CO2.
关键词	alpine nitrogen addition soil density fractionation soil carbon partitioning enzyme activity microorganism
学科领域	Environmental Sciences ; Meteorology & Atmospheric Sciences
DOI	10.1088/1748-9326/abbb50
收录类别	SCI
语种	英语
WOS关键词	PROGRESSIVE NITROGEN LIMITATION ; ATMOSPHERIC CO2 ; ECOSYSTEM RESPONSES ; PINE FOREST ; DIOXIDE ; PLANTS ; POOLS ; FACE ; TURNOVER ; GROWTH
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000578368800001
出版者	IOP PUBLISHING LTD
文献子类	Article
出版地	BRISTOL
资助机构	Strategic Priority Program of Chinese Academy of Science [XDA20050102] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41991234, 41725003] ; Science Planning of the Tibet Autonomous Region [Y66M2701AL] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M660781]
作者邮箱	zhangyj@igsnrr.ac.cn
作品OA属性	gold
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/21555
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11 Datun Rd, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100101, Peoples R China 6.Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China 7.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Guang,Liang, Chao,Feng, Xiaojuan,et al. Elevated CO(2)decreases soil carbon stability in Tibetan Plateau[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(11).
APA	Zhao, Guang.,Liang, Chao.,Feng, Xiaojuan.,Liu, Lingli.,Zhu, Juntao.,...&Zhang, Yangjian.(2020).Elevated CO(2)decreases soil carbon stability in Tibetan Plateau.ENVIRONMENTAL RESEARCH LETTERS,15(11).
MLA	Zhao, Guang,et al."Elevated CO(2)decreases soil carbon stability in Tibetan Plateau".ENVIRONMENTAL RESEARCH LETTERS 15.11(2020).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Zhao-2020-Elevated C（1510KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文