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Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China
Zhang Shu-juan1,2; Tang Qiang1,3; Bao Yu-hai1; He Xiu-bin1; Tian Feng-xia1; Lu Fa-you1; Wang Ming-feng1,2; Anjum, Raheel1,2,4
2018
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume15Issue:10Pages:2192-2206
SubtypeArticle
AbstractInundation of the Three Gorges Reservoir has created a 30-m water-level fluctuation zone with seasonal hydrological alternations of submergence and exposure, which may greatly affect soil properties and bank stability. The aim of this study was to investigate the response of soil pore structure to seasonal water-level fluctuation in the reservoir, and particularly, the hydrological change of wetting and drying cycles. Soil pore structure was visualized with industrial X-ray computed tomography and digital image analysis techniques. The results showed that soil total porosity (> 100 m), total pore number, total throat number, and mean throat surface area increased significantly under wetting and drying cycles. Soil porosity, pore number and throat number within each size class increased in the course of wetting and drying cycles. The coordination number, degree of anisotropy and fractal dimension were indicating an increase. In contrast, the mean shape factor, pore-throat ratio, and Euler-Poincare number decreased due to wetting and drying cycles. These illustrated that the wetting and drying cycles made soil pore structure become more porous, continuous, heterogeneous and complex. It can thus be deduced that the water-level fluctuation would modify soil porosity, pore size distribution, and pore morphology in the Three Gorges Reservoir, which may have profound implications for soil processes, soil functions, and bank stability.
KeywordSoil pore structure X-ray computed tomography Image analysis Wetting and drying cycles Water-level fluctuation Three Gorges Reservoir
DOI10.1007/s11629-018-5013-3
Indexed BySCI
WOS KeywordMICRO-COMPUTED TOMOGRAPHY ; WETTING-DRYING CYCLES ; AGGREGATE MICROSTRUCTURE ; QUANTIFICATION ; TILLAGE ; ZONE ; FERTILIZATION ; SUCCESSION ; ALGORITHM ; TRANSPORT
Language英语
Quartile4区
Funding ProjectNational Natural Science Foundation of China[41771321] ; National Natural Science Foundation of China[41771320] ; National Natural Science Foundation of China[41571278] ; Sichuan Science and Technology Program[2018SZ0132]
TOP
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000447295900009
Funding OrganizationNational Natural Science Foundation of China ; Sichuan Science and Technology Program
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24047
Collection山区发展研究中心
山地灾害与地表过程重点实验室
山地表生过程与生态调控重点实验室
Corresponding AuthorHe Xiu-bin
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Rothamsted Res, Sustainable Agr Sci Dept, Okehampton EX20 2SB, Devon, England
4.Abdul Wali Khan Univ, Mardan 23200, Pakistan
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhang Shu-juan,Tang Qiang,Bao Yu-hai,et al. Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(10):2192-2206.
APA Zhang Shu-juan.,Tang Qiang.,Bao Yu-hai.,He Xiu-bin.,Tian Feng-xia.,...&Anjum, Raheel.(2018).Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China.JOURNAL OF MOUNTAIN SCIENCE,15(10),2192-2206.
MLA Zhang Shu-juan,et al."Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China".JOURNAL OF MOUNTAIN SCIENCE 15.10(2018):2192-2206.
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