干旱区生态环境知识资源中心(Arid): Impact of differences in soil temperature on the desert carbon sink

Arid

DOI	10.1016/j.geoderma.2020.114636
	Impact of differences in soil temperature on the desert carbon sink
	Yang, Fan; Huang, Jianping; He, Qing; Zheng, Xinqian; Zhou, Chenglong; Pan, Honglin; Huo, Wen; Yu, Haipeng; Liu, Xiaoyue; Meng, Lu; Han, Dongliang; Ali, Mamtimin; Yang, Xinghua
通讯作者	Huang, JP
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2020
卷号	379
英文摘要	An understanding of the global terrestrial carbon cycle is crucial to predict future climate change. Deserts are an important part of the terrestrial ecosystem, but their role in the terrestrial carbon cycle has long been neglected. Recent studies have shown that deserts may sequester enormous volumes of CO2 and play a pivotal role as a carbon sink. As the world's second-largest shifting desert, the Taklimakan Desert (TD) contributes substantially to the global desert carbon sink. However, the contributions of the internal processes of the TD to its carbon sink and the long-term trend of the carbon sink under climate change are still unclear. Based on an observational study, we determined that both the expansion/contraction of soil air containing CO2 caused by heat fluctuation in shifting sand and the salt/alkali chemistry control the release/absorption processes of soil respiration in shifting sand. Besides, the mutual offset of these processes indicates that the shifting sand in the TD acts as a stable carbon sink at present, with an annual average CO2 uptake rate of 7.11 g m(-2). However, an increase in soil temperature difference will stimulate soil air expansion and release more CO2 into the atmosphere under climate change, gradually lessening the carbon sink rate of shifting sand in TD in the future. These processes will be accelerated by a positive feedback loop, where this effect triggered by climate change will enhance regional warming. Our results highlight the status of deserts in the global carbon cycle and provide crucial information regarding the world's missing carbon sink.
英文关键词	Taklimakan Desert Soil respiration Soil temperature difference Desert carbon sink Expansion/contraction Climate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000580657200017
WOS关键词	TAKLIMAKAN DESERT ; CO2 FLUXES ; RESPIRATION ; CLIMATE ; ECOSYSTEMS ; INCREASES
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326988
作者单位	[Yang, Fan; Huang, Jianping; Liu, Xiaoyue] Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Peoples R China; [Yang, Fan; He, Qing; Zhou, Chenglong; Pan, Honglin; Huo, Wen; Meng, Lu; Ali, Mamtimin; Yang, Xinghua] China Meteorol Adm, Inst Desert Meteorol, Taklimakan Desert Meteorol Field Expt Stn CMA, Urumqi, Peoples R China; [Huang, Jianping; Yu, Haipeng; Han, Dongliang] Lanzhou Univ, Collaborat Innovat Ctr Western Ecol Safety, Lanzhou, Peoples R China; [Zheng, Xinqian] Xinjiang Agrometeorol Observ, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Fan,Huang, Jianping,He, Qing,et al. Impact of differences in soil temperature on the desert carbon sink[J]. 兰州大学,2020,379.
APA	Yang, Fan.,Huang, Jianping.,He, Qing.,Zheng, Xinqian.,Zhou, Chenglong.,...&Yang, Xinghua.(2020).Impact of differences in soil temperature on the desert carbon sink.GEODERMA,379.
MLA	Yang, Fan,et al."Impact of differences in soil temperature on the desert carbon sink".GEODERMA 379(2020).