Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China
文献类型：期刊论文
| 作者 | 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
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
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| 出版日期 | 2018-10-01 |
| 卷号 | 15期号:10页码:2192-2206 |
| ISSN号 | 1672-6316 |
| 关键词 | Soil pore structure X-ray computed tomography Image analysis Wetting and drying cycles Water-level fluctuation Three Gorges Reservoir |
| DOI | 10.1007/s11629-018-5013-3 |
| 英文摘要 | Inundation 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. |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000447295900009 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24047]  |
| 专题 | 成都山地灾害与环境研究所_山区发展研究中心 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | He Xiu-bin |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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