气候变化领域集成服务门户(CCPortal): The Accelerating Land Carbon Sink of the 2000s May Not Be Driven Predominantly by the Warming Hiatus

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DOI	10.1002/2017GL075808
	The Accelerating Land Carbon Sink of the 2000s May Not Be Driven Predominantly by the Warming Hiatus
	Zhu, Zaichun; Piao, Shilong; Yan, Tao; Ciais, Philippe; Bastos, Ana; Zhang, Xuanze; Wang, Zhaoqi
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	0094-8276
EISSN	1944-8007
起始页码	1402
结束页码	1409
卷号	45 期号:3
英文摘要	Recent studies attributed the accelerating land carbon sink (S-LAND) during the 2000s to respiration decrease induced by the warming hiatus. We used two long-term atmospheric inversions, three temperature data sets, and eight ecosystem models to test this attribution. Our results show that the changes in seasonal S-LAND trend between the warming (1982-1998) and hiatus (1998-2014) periods do not track evidently the changes in seasonal temperature trends at both global and regional scales. A conceptual model of the annual/seasonal temperature response of respiration suggests that changes in seasonal temperature during this period are unlikely to cause a significant decrease in annual respiration. The ecosystem models suggest that trends in both gross primary production and terrestrial ecosystem respiration slowed down slightly, but the resulting slight acceleration in net ecosystem productivity is insufficient to explain the increasing trend in S-LAND. Instead, the roles of alternative drivers on the accelerating S-LAND seem to be important. Plain Language Summary Understanding the mechanisms controlling changes in the land carbon sink is of great importance for projecting future climate. Recent studies attributed the accelerating land sink during the 2000s to the respiration decrease induced by the warming hiatus. By analyzing changes in seasonal and regional trends in the observed CO2 fluxes and temperature, we show that the seasonal/spatial trend changes of temperature are not consistent with patterns of the land sink. The ecosystem model simulations also suggest that the slight increase in terrestrial ecosystem carbon sink cannot explain the significant enhancement of land sink during the warming hiatus. These results collectively showed that the warming hiatus could not explain the accelerating land sink and other processes should be reevaluated.
关键词	INTERANNUAL VARIABILITY SOIL RESPIRATION ATMOSPHERIC CO2 TEMPERATURE ECOSYSTEMS BUDGET DECOMPOSITION UNCERTAINTY EXCHANGE INCREASE
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000426161800025
来源期刊	GEOPHYSICAL RESEARCH LETTERS
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/259326
推荐引用方式 GB/T 7714	Zhu, Zaichun,Piao, Shilong,Yan, Tao,et al. The Accelerating Land Carbon Sink of the 2000s May Not Be Driven Predominantly by the Warming Hiatus[J]. 中国科学院青藏高原研究所,2018,45(3).
APA	Zhu, Zaichun.,Piao, Shilong.,Yan, Tao.,Ciais, Philippe.,Bastos, Ana.,...&Wang, Zhaoqi.(2018).The Accelerating Land Carbon Sink of the 2000s May Not Be Driven Predominantly by the Warming Hiatus.GEOPHYSICAL RESEARCH LETTERS,45(3).
MLA	Zhu, Zaichun,et al."The Accelerating Land Carbon Sink of the 2000s May Not Be Driven Predominantly by the Warming Hiatus".GEOPHYSICAL RESEARCH LETTERS 45.3(2018).