气候变化领域集成服务门户(CCPortal): Higher Temperature Sensitivity of Soil C Release to Atmosphere From Northern Permafrost Soils as Indicated by a Meta-Analysis

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DOI	10.1029/2020GB006688
	Higher Temperature Sensitivity of Soil C Release to Atmosphere From Northern Permafrost Soils as Indicated by a Meta-Analysis
	Ren, Shuai; Ding, Jinzhi; Yan, Zhengjie; Cao, Yingfang; Li, Juan; Wang, Yonghui; Liu, Dan; Zeng, Hui; Wang, Tao
通讯作者	Ding, JZ ; Wang, T (通讯作者)
发表日期	2020
ISSN	0886-6236
EISSN	1944-9224
卷号	34 期号:11
英文摘要	The loss of carbon from soils to the atmosphere resulting from climate change is projected to be large, but these projections exhibit significant uncertainty, largely due to insufficient knowledge of the patterns and controls of the temperature sensitivity of soil microbial respiration. Here we synthesized data from 52 soil incubation studies across the Northern Hemisphere to assess the spatial patterns of Q(10) and its key drivers in different soil layers and geographic zones. The mean Q(10) was 2.51 +/- 1.13 across the northern ecosystems, but it exhibited significant variability. After averaged by ecosystem types, the highest mean Q(10) value was observed in the northern permafrost soils, where the Q(10) values were nearly 18% higher than those in nonpermafrost regions. The temperature sensitivity was larger in subsoil than in topsoil layers, particularly in permafrost subsoils. Besides, the dominant factors that correlate with Q(10) values are the carbon input, described by satellite-derived net primary productivity (NPP) in the topsoil and the soil C:N ratio in the subsoil. Based on the main factors affecting Q(10), we provide a gridded Q(10) data set for the midhigh-latitude areas, which further indicates that northern permafrost regions are more sensitive to climate warming than others. These results highlight the key role played by the permafrost in the temperature sensitivity of soil C release, and the necessity of including depth-specific soil C release processes in models, if we are to make better predictions of the soil C dynamics in future climate change scenarios.
关键词	ORGANIC-MATTER DECOMPOSITION CARBON DYNAMICS CLIMATE RESPIRATION NITROGEN MINERALIZATION AVAILABILITY QUALITY SURFACE FOREST
英文关键词	soil microbial respiration; carbon decomposition; Q(10); permafrost; climatic warming
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000595748400010
来源期刊	GLOBAL BIOGEOCHEMICAL CYCLES
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/259939
推荐引用方式 GB/T 7714	Ren, Shuai,Ding, Jinzhi,Yan, Zhengjie,et al. Higher Temperature Sensitivity of Soil C Release to Atmosphere From Northern Permafrost Soils as Indicated by a Meta-Analysis[J]. 中国科学院青藏高原研究所,2020,34(11).
APA	Ren, Shuai.,Ding, Jinzhi.,Yan, Zhengjie.,Cao, Yingfang.,Li, Juan.,...&Wang, Tao.(2020).Higher Temperature Sensitivity of Soil C Release to Atmosphere From Northern Permafrost Soils as Indicated by a Meta-Analysis.GLOBAL BIOGEOCHEMICAL CYCLES,34(11).
MLA	Ren, Shuai,et al."Higher Temperature Sensitivity of Soil C Release to Atmosphere From Northern Permafrost Soils as Indicated by a Meta-Analysis".GLOBAL BIOGEOCHEMICAL CYCLES 34.11(2020).