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DOI10.1007/s40641-019-00132-z
Carbon Cycling in Global Drylands
Lal R.
发表日期2019
ISSN21986061
起始页码221
结束页码232
卷号5期号:3
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 km2 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., Springer Nature Switzerland AG.
英文关键词Carbon sequestration; Desertification; Drylands; Global carbon cycle; Secondary carbonates
来源期刊Current Climate Change Reports
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/176176
作者单位Carbon Management and Sequestration Center, The Ohio State University, Columbus, OH 43210, United States
推荐引用方式
GB/T 7714
Lal R.. Carbon Cycling in Global Drylands[J],2019,5(3).
APA Lal R..(2019).Carbon Cycling in Global Drylands.Current Climate Change Reports,5(3).
MLA Lal R.."Carbon Cycling in Global Drylands".Current Climate Change Reports 5.3(2019).
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