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  4. 山地表生过程与生态调控重点实验室
Fractal characterization of sediment particle size distribution in the water-level fluctuation zone of the Three Gorges Reservoir, China

文献类型：期刊论文

作者Li Jin-lin1,2,3; Bao Yu-hai1; Wei Jie2; He Xiu-bin1; Tang Qiang1,4; Nambajimana, Jean de Dieu1,3
刊名JOURNAL OF MOUNTAIN SCIENCE
出版日期2019-09-01
卷号16期号:9页码:2028-2038
关键词Spatial differentiation Sediment particle Fractal dimension Water level fluctuation zone Three Gorges Reservoir
ISSN号1672-6316
DOI10.1007/s11629-019-5456-1
通讯作者Bao Yu-hai(byh@imde.ac.cn) ; He Xiu-bin(xiubinh@imde.ac.cn)
英文摘要The combined effect of periodic water impoundment and seasonal natural flood events has created a 30 m high water-level fluctuation zone (WLFZ) around the Three Gorges Reservoir (TGR), China, forming a unique eco-landscape. Siltation, eutrophication, enrichment of heavy metals, and methane emissions in the WLFZ have been widely associated with sediment and soil particles generated from the upstream catchment or upland slopes. However, little attention has been paid to the complexity of sediment particle-size distributions in the WLFZ. In the present study, core samples (from a 345 cm thick sediment core from the base of the WLFZ), slope transect surface samples (across/up a WLFZ slope), and along-river/longitudinal surface samples (from the reservoir reaches) were collected. Laser granulometry and a volume-based fractal model were used to reveal the characteristics of sediment particle-size distributions. Results indicate that the alternation of coarse and fine particles in the sedimentary core profile is represented as a fluctuation of low and high values of fractal dimension (D), ranging from 2.59 to 2.77. On the WLFZ slope transect, surface sediment particles coarsen with increasing elevation, sand content increases from 3.3% to 78.5%, and D decreases from 2.76 to 2.53. Longitudinally, surface sediments demonstrate a downstream-fining trend, and D increases gradually downstream. D is significantly positively correlated with the fine particle content. We conclude that D is a useful measure for evaluating sediment particle-size distribution.
WOS关键词RIPARIAN VEGETATION ; SOIL-EROSION ; HEAVY-METALS ; DEPOSITION ; RIVER ; ADSORPTION ; LONG
资助项目National Natural Science Foundation of China[41771320] ; National Natural Science Foundation of China[41771321] ; National Natural Science Foundation of China[41571278] ; Opening Project of Chongqing Key Laboratory of Earth Surface Processes and Environmental Remote Sensing in the Three Gorges Reservoir Area[DBGC201801] ; Sichuan Science and Technology Program[2018SZ0132]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000485301000004
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; Opening Project of Chongqing Key Laboratory of Earth Surface Processes and Environmental Remote Sensing in the Three Gorges Reservoir Area ; Sichuan Science and Technology Program
源URL[http://ir.imde.ac.cn/handle/131551/27152]  
专题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Bao Yu-hai; 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.Chongqing Key Lab Earth Surface Proc & Environm R, Chongqing 401331, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Rothamsted Res, Sustainable Agr Sci Dept, Okehampton EX20 2SB, Devon, England
推荐引用方式
GB/T 7714		 Li Jin-lin,Bao Yu-hai,Wei Jie,et al. Fractal characterization of sediment particle size distribution in the water-level fluctuation zone of the Three Gorges Reservoir, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(9):2028-2038.
APA Li Jin-lin,Bao Yu-hai,Wei Jie,He Xiu-bin,Tang Qiang,&Nambajimana, Jean de Dieu.(2019).Fractal characterization of sediment particle size distribution in the water-level fluctuation zone of the Three Gorges Reservoir, China.JOURNAL OF MOUNTAIN SCIENCE,16(9),2028-2038.
MLA Li Jin-lin,et al."Fractal characterization of sediment particle size distribution in the water-level fluctuation zone of the Three Gorges Reservoir, China".JOURNAL OF MOUNTAIN SCIENCE 16.9(2019):2028-2038.

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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