DOI: 10.1002/2015GL064689
论文题名: Abiotic CO2 uptake from the atmosphere by semiarid desert soil and its partitioning into soil phases
作者: Liu J. ; Fa K. ; Zhang Y. ; Wu B. ; Qin S. ; Jia X.
刊名: Geophysical Research Letters
ISSN: 0094-9157
EISSN: 1944-8888
出版年: 2015
卷: 42, 期: 14 起始页码: 5779
结束页码: 5785
语种: 英语
英文关键词: 13CO2 addition
; abiotic carbon uptake
; deserts
; natural soil
; soil solid phase
Scopus关键词: Arid regions
; Landforms
; Soils
; Carbon uptake
; Desert soils
; Deserts
; Fixed carbons
; Flux measurements
; Natural soils
; Northern China
; Soil solids
; Soil conservation
; abiotic factor
; carbon dioxide
; carbon sink
; desert
; nutrient uptake
; semiarid region
; soil property
; China
英文摘要: Deserts may show strong downward CO2 fluxes and thus could be a significant carbon sink. However, this hypothesis has been strongly challenged because of the failure to determine both the reliability of flux measurements and the exact location of fixed carbon. In this study, we added 13CO2 to natural (unsterilized) soil in the Mu Us Desert in northern China and quantified the partitioning of added 13CO2 into soil solid and vapor phases. Results show that natural desert soil absorbed 13CO2 at a mean rate of 0.28gm-2d-1. Of the absorbed 13CO2, 7.1% was released over a 48h period after 13CO2 feeding, 72.8% was stored in the soil solid phase, 0.0007% was found in the vapor phase, while 20.0% of the absorbed 13CO2 was undetected. These results indicate that undisturbed desert soils can absorb CO2 from the atmosphere, with the majority of fixed carbon conserved in the soil solid phase. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938960051&doi=10.1002%2f2015GL064689&partnerID=40&md5=98ae88555574e5fda0de2293af567066
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8773
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Yanchi Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing, China
Recommended Citation:
Liu J.,Fa K.,Zhang Y.,et al. Abiotic CO2 uptake from the atmosphere by semiarid desert soil and its partitioning into soil phases[J]. Geophysical Research Letters,2015-01-01,42(14).