干旱区生态环境知识资源中心(Arid): Carbon Cycling in Global Drylands

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DOI	10.1007/s40641-019-00132-z
	Carbon Cycling in Global Drylands
	Lal, Rattan
通讯作者	Lal, Rattan
来源期刊	CURRENT CLIMATE CHANGE REPORTS
ISSN	2198-6061
出版年	2019
卷号	5 期号:3 页码:221-232
英文摘要	Purpose of Review The aim of this paper is to describe the carbon cycle in drylands in relation to the processes, factors, and causes affecting it. A specific focus is placed on both biotic and abiotic mechanisms of carbon sequestration in drylands in relation to mitigation of the anthropogenic climate change. Recent Findings Global dryland area is increasing along with an increase in risks of desertification, salinization, and eolian/hydrologic processes of accelerated soil erosion with strong impacts on the carbon cycle. Nonetheless, drylands contribute strongly towards the land-based sink of the atmospheric carbon dioxide through sequestration of carbon in the soil, ground water, and biomass. Thus, dryland ecosystems affect inter-annual variability in the global carbon cycle and create a negative feedback through carbon sequestration. Summary Global drylands, covering 66.7 M km(2) or 45.36% of the Earth's land area, strongly impact the ecosystem carbon stock, contribute to the land-based carbon sink, and provide a negative feedback to the global carbon cycle. Whereas the net primary productivity is limited by the water scarcity, especially in hyper-arid and arid ecoregions, sequestration of inorganic carbon in soil and ground water is an important control of the carbon cycle. Desertification, caused by eolian and hydrologic erosion along with salinization, must be controlled and reversed to enhance carbon sequestration, achieve land degradation neutrality, and create a negative feedback. Carbon sequestration strategy recognizes soil as a rights holder to be protected,restored and naturally evolve.
英文关键词	Carbon sequestration Secondary carbonates Desertification Global carbon cycle Drylands
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000477645100008
WOS关键词	SOIL ORGANIC-CARBON ; INORGANIC CARBON ; MOJAVE DESERT ; CONCEPTUAL-FRAMEWORK ; SEQUESTRATION ; DEGRADATION ; LAND ; ECOSYSTEM ; EROSION ; STORAGE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215006
作者单位	Ohio State Univ, Carbon Management & Sequestrat Ctr, Columbus, OH 43210 USA
推荐引用方式 GB/T 7714	Lal, Rattan. Carbon Cycling in Global Drylands[J],2019,5(3):221-232.
APA	Lal, Rattan.(2019).Carbon Cycling in Global Drylands.CURRENT CLIMATE CHANGE REPORTS,5(3),221-232.
MLA	Lal, Rattan."Carbon Cycling in Global Drylands".CURRENT CLIMATE CHANGE REPORTS 5.3(2019):221-232.

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