中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 重庆绿色智能技术研究院
  3. 中国科学院重庆绿色智能技术研究院
A higher river sinuosity increased riparian soil structural stability on the downstream of a dammed river

文献类型：期刊论文

作者Ran, Yiguo1,2; Liu, Yan1,2; Wu, Shengjun2; Li, Wenjuan1,2; Zhu, Kai2; Ji, Yongyue1,2; Mir, Yaseen1,2; Ma, Maohua2; Huang, Ping2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022
卷号802页码:10
关键词Soil aggregate stability River morphology Riparian zone River Yangtze Three Gorges Dam
ISSN号0048-9697
DOI10.1016/j.scitotenv.2021.149886
通讯作者Ma, Maohua(mamaohua@cigit.ac.cn) ; Huang, Ping(huangping@cigit.ac.cn)
英文摘要Hydropower dam constructions and operations have dramatically changed the original hydrological regime of natural rivers. Because of significantly slashed and suspended sediments blocked by damming, discharged "clear" water was found to play a strong undercutting effect on the riverbank and to exacerbate riparian soil erosion on the downstream near dams. Yet, it is still an unsettled issue whether the instability of riparian soil structure would be simply correlated negatively with the distance to a dam. In this study, soils along the downstream riparian zone of a huge dam on the River Yangtze, China, were sampled to examine the distance effect on the riparian soil structural stability. Water-stable aggregates were fractionated by the wet-sieving method. Mean weight diameter (MWD) and geometric mean diameter (GMD) were used to indicate riparian soil stability. Further, the fractal dimension (D) and soil erodibility parameter (K) were used to represent the likelihood of riparian erosion. Our results revealed that riparian soil structural stability demonstrated a high spatial heterogeneity along the River Yangtze, and was less affected by the spatial distance to the dam. Rather, the soil stability was primarily influenced by a river shape index (sinuosity) and local edaphic properties. The river sinuosity index demonstrated a positive relationship with soil structural stability. Additionally, soil organic matter was found as a major edaphic factor in stabilizing soil structure. The results indicated that river sinuosity plays a crucial role in stabilizing soil by accumulating soil organic matters. Our findings implied that the potential negative impact of damming effect on soil stability may be attenuated by maintaining a higher sinuosity of the river. Against the risk of riparian soil erosion along the dammed river, the configuration of river morphology shall be considered as one of the potential managements in offsetting the negative impacts of damming. (c) 2021 Published by Elsevier B.V.
资助项目National Natural Science Foundation of China[41771266] ; National Natural Science Foundation of China[41401243] ; Research Fund of State Key Laboratory of Soil and Sustainable Agriculture, Nanjing Institute of Soil Science, Chinese Academy of Science[Y812000005] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017391] ; Chongqing Municipal Bureau of Science and Technology[cstc2020jcyj-zdxmX0018] ; Chongqing Municipal Bureau of Science and Technology[cstc2019jscx-dxwtBX0007] ; Chinese Academy of Sciences
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000701684100006
出版者ELSEVIER
源URL[http://119.78.100.138/handle/2HOD01W0/14281]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Ma, Maohua; Huang, Ping
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Ran, Yiguo,Liu, Yan,Wu, Shengjun,et al. A higher river sinuosity increased riparian soil structural stability on the downstream of a dammed river[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,802:10.
APA Ran, Yiguo.,Liu, Yan.,Wu, Shengjun.,Li, Wenjuan.,Zhu, Kai.,...&Huang, Ping.(2022).A higher river sinuosity increased riparian soil structural stability on the downstream of a dammed river.SCIENCE OF THE TOTAL ENVIRONMENT,802,10.
MLA Ran, Yiguo,et al."A higher river sinuosity increased riparian soil structural stability on the downstream of a dammed river".SCIENCE OF THE TOTAL ENVIRONMENT 802(2022):10.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。