Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China

doi:10.1007/s11629-018-5013-3

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2018 > Vol15 No.10

	Effects of seasonal water-level fluctuation on soil pore structure in the Three Gorges Reservoir, China
	Zhang Shu-juan; Tang Qiang; Bao Yu-hai; He Xiu-bin; Tian Feng-xia; Lu Fa-you; Wang Ming-feng; Anjum, Raheel
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:10 页码:2192-2206
关键词	Soil pore structure X-ray computed tomography Image analysis Wetting and drying cycles Water-level fluctuation Three Gorges Reservoir
ISSN号	1672-6316
DOI	10.1007/s11629-018-5013-3
文献子类	Article
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.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000447295900009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46326]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.10
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.