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Macropores regulate CO2 behavior in an andisol soil
Guo, Linlin1,2; Nishimura, Taku2; Imoto, Hiromi2; Sun, Zhigang1
2018-07-01
Source PublicationPADDY AND WATER ENVIRONMENT
ISSN1611-2490
Volume16Issue:3Pages:391-396
Corresponding AuthorSun, Zhigang(sun.zhigang@igsnrr.ac.cn)
AbstractMacropores resulting from soil pedogenesis, biological activity, and agricultural practices play important roles in soil water, chemical and gas transport; however, seldom studies focus on the effect of soil macropores on CO2 behavior. In this study, a 150-day soil column incubation experiment was conducted to investigate the CO2 behavior in a homogeneous soil column and a soil column with an artificial macropore, which have the same total porosity. The results showed that the cumulative CO2 fluxes observed in the soil with a macropore (57.2 g m(-2)) were higher than those in the homogeneous soil (52.7 g m(-2)). The soil cumulative CO2 fluxes measured using column incubation can fit the kinetic model, and a higher carbon mineralization rate in the soil with the macropore was found. The results of the incubation experiment also suggest that macropore increased the gas diffusivities, and thus decreased the CO2 concentrations in the soil profile. This study proposed a simulation experiment and quantified the effect of macropore on soil CO2 behavior, which could help to understand the mechanism of CO2 emission from soil with macropores especially caused by agricultural practices.
KeywordGas diffusion Macropore Soil CO2 flux Column incubation
DOI10.1007/s10333-018-0632-4
WOS KeywordCOMPUTED-TOMOGRAPHY ; AIR PERMEABILITY ; GAS DIFFUSIVITY ; TRANSPORT ; CARBON ; MINERALIZATION ; MODEL ; ENVIRONMENT ; COMPACTION ; TILLAGE
Indexed BySCI
Language英语
WOS Research AreaAgriculture
WOS SubjectAgricultural Engineering ; Agronomy
WOS IDWOS:000440287800001
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54575
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSun, Zhigang
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Tokyo, Grad Sch Agr & Life Sci, Bunkyo Ku, 1-1-1 Yayoi, Tokyo 1130032, Japan
Recommended Citation
GB/T 7714
Guo, Linlin,Nishimura, Taku,Imoto, Hiromi,et al. Macropores regulate CO2 behavior in an andisol soil[J]. PADDY AND WATER ENVIRONMENT,2018,16(3):391-396.
APA Guo, Linlin,Nishimura, Taku,Imoto, Hiromi,&Sun, Zhigang.(2018).Macropores regulate CO2 behavior in an andisol soil.PADDY AND WATER ENVIRONMENT,16(3),391-396.
MLA Guo, Linlin,et al."Macropores regulate CO2 behavior in an andisol soil".PADDY AND WATER ENVIRONMENT 16.3(2018):391-396.
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