气候变化领域集成服务门户(CCPortal): Accelerated terrestrial ecosystem carbon turnover and its drivers

CCPortal

DOI	10.1111/gcb.15224
	Accelerated terrestrial ecosystem carbon turnover and its drivers
	Wu, Donghai; Piao, Shilong; Zhu, Dan; Wang, Xuhui; Ciais, Philippe; Bastos, Ana; Xu, Xiangtao; Xu, Wenfang
通讯作者	Piao, S (通讯作者)
发表日期	2020
ISSN	1354-1013
EISSN	1365-2486
起始页码	5052
结束页码	5062
卷号	26 期号:9
英文摘要	The terrestrial carbon cycle has been strongly influenced by human-induced CO(2)increase, climate change, and land use change since the industrial revolution. These changes alter the carbon balance of ecosystems through changes in vegetation productivity and ecosystem carbon turnover time (tau(eco)). Even though numerous studies have drawn an increasingly clear picture of global vegetation productivity changes, global changes in tau(eco)are still unknown. In this study, we analyzed the changes of tau(eco)between the 1860s and the 2000s and their drivers, based on theory of dynamic carbon cycle in non-steady state and process-based ecosystem model. Results indicate that tau(eco)has been reduced (i.e., carbon turnover has accelerated) by 13.5% from the 1860s (74 years) to the 2000s (64 years), with reductions of 1 year of carbon residence times in vegetation (r(veg)) and of 9 years in soil (r(soil)). Additionally, the acceleration of tau(eco)was examined at biome scale and grid scale. Among different driving processes, land use change and climate change were found to be the major drivers of turnover acceleration. These findings imply that carbon fixed by plant photosynthesis is being lost from ecosystems to the atmosphere more quickly over time, with important implications for the climate-carbon cycle feedbacks.
关键词	LAND-USE CHANGE TREE MORTALITY CLIMATE MODEL CO2 EMISSIONS DYNAMICS NITROGEN STORAGE TIMES
英文关键词	carbon turnover time; climate change; CO(2)increase; ecosystem; land use change; soil; vegetation
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000545779800001
来源期刊	GLOBAL CHANGE BIOLOGY
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/260085
推荐引用方式 GB/T 7714	Wu, Donghai,Piao, Shilong,Zhu, Dan,et al. Accelerated terrestrial ecosystem carbon turnover and its drivers[J]. 中国科学院青藏高原研究所,2020,26(9).
APA	Wu, Donghai.,Piao, Shilong.,Zhu, Dan.,Wang, Xuhui.,Ciais, Philippe.,...&Xu, Wenfang.(2020).Accelerated terrestrial ecosystem carbon turnover and its drivers.GLOBAL CHANGE BIOLOGY,26(9).
MLA	Wu, Donghai,et al."Accelerated terrestrial ecosystem carbon turnover and its drivers".GLOBAL CHANGE BIOLOGY 26.9(2020).