IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleInfluence of hyporheic water exchange on quality of sediment pore water for the Juehe River in winter
郭伟强1; 宋进喜1,2; 刘琪1; 张国涛3,4; 王伟泽1; 唐斌1; 窦馨逸1
Corresponding Author宋进喜
Source Publication环境科学学报
Contribution Rank3
Other AbstractHyporheic zone is the ecotone between groundwater and surface water. It is one of the controlling factors for the quality of river water,pore water and groundwater,which has great significance in the hydrological cycle and contaminant transportation. Twenty one test sites in the Juehe River were selected to conduct the in-situ synchronous test of vertical temperature profiles in December 2016. One-dimension heat advection-diffusion equation was used to estimate the pattern and magnitude of hyporheic water exchange. Its relationship with main cations and anions in sediment pore water was subsequently analyzed. The results showed patterns of upward hyorheic water exchange and relatively large magnitude of water exchange exsited in 21 test sites. Stream topography and sediment grain size were the main elements to influence this distribution. The average concentrations of Ca~(2+) ,Na~+ ,Mg~(2+) , HCO_3~- and SO_4~(2-) in sedeiment pore water was comparatively close to those in groundwater. However,for K~+ ,NH_4~+ and Cl~- ,the average concentrations in sediment pore water were significantly different from those in groundwater. Furthermore,spatial variability existed across longitudinal section. Specifically, the concentrations of Ca~(2+) ,Mg~(2+) and SO_4~(2-) in the left and right banks were higher than the central channel,but for NH_4~+ and Cl~- ,the pattern was reversed. Pearson correlation analysis and linear fit demonstrated good agreement between the water exchange magnitude and concentrations of Ca~(2+) ,Mg~(2+) and SO_4~(2-) . For the concentrations of K~+ ,NH_4~+ and Cl~- ,a negtive correlation with water exchange magnitude existed. However,the relationship between the concentrations of Na~+ and HCO_3~- and water exchange magnitude failed to pass the test,indicating no significant correlation.
Keyword潏河 潜流带 间隙水 含量 空间变化
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
郭伟强,宋进喜,刘琪,等. 潏河冬季潜流带水交换对沉积物间隙水水质的影响[J]. 环境科学学报,2018,38(5):1957-1967.
APA 郭伟强.,宋进喜.,刘琪.,张国涛.,王伟泽.,...&窦馨逸.(2018).潏河冬季潜流带水交换对沉积物间隙水水质的影响.环境科学学报,38(5),1957-1967.
MLA 郭伟强,et al."潏河冬季潜流带水交换对沉积物间隙水水质的影响".环境科学学报 38.5(2018):1957-1967.
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