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tempospatialvariationsofsedimentassociatednutrientsandcontaminantsintheruxitributaryofthethreegorgesreservoirchina
Shi Zhonglin; Wang Yongyan; Wen Anbang; Yan Dongchun; Chen Jiacun
2018
Source Publicationjournalofmountainscience
ISSN1672-6316
Volume15Issue:2Pages:319
AbstractRuxi River is a tributary of the Three Gorges Reservoir. This study examined the temporal and spatial dynamics in particle size characteristics and the associated nutrients and contaminants of the fluvial suspended and deposited sediments along the Ruxi River. Temporal variations in the particle size distribution of the suspended sediment are controlled mainly by differences in sediment source during different seasons. Total organic carbon(TOC), total nitrogen(TN) and total phosphorous(TP) in the < 62 μm fraction of the suspended sediment exhibit considerably higher concentrations in spring, indicating high probability of algal blooms in the backwater areas. Downstream trends in the nutrient contents of < 62 μm deposited sediments imply the greatest potential for eutrophication in the backwater ends, where highest nutrient concentrations were detected. Assessment of metal contamination shows that the sediments deposited in the water-level fluctuation zone were moderately to strongly contaminated by Cadmium(Cd), with a considerably high potential ecological risk. The findings reported have emphasized the impacts of reservoir impoundment on aquatic and/or terrestrial environment in this region. More information on physical, chemical and biological processes of sediment and sediment-associated materials are needed for developing environmentally and ecologically sound policies of water and sediment management.
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/31393
Collection山地表生过程与生态调控重点实验室
科技与合作处
Affiliation中国科学院成都山地灾害与环境研究所
First 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
Shi Zhonglin,Wang Yongyan,Wen Anbang,et al. tempospatialvariationsofsedimentassociatednutrientsandcontaminantsintheruxitributaryofthethreegorgesreservoirchina[J]. journalofmountainscience,2018,15(2):319.
APA Shi Zhonglin,Wang Yongyan,Wen Anbang,Yan Dongchun,&Chen Jiacun.(2018).tempospatialvariationsofsedimentassociatednutrientsandcontaminantsintheruxitributaryofthethreegorgesreservoirchina.journalofmountainscience,15(2),319.
MLA Shi Zhonglin,et al."tempospatialvariationsofsedimentassociatednutrientsandcontaminantsintheruxitributaryofthethreegorgesreservoirchina".journalofmountainscience 15.2(2018):319.
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