JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2013, Vol. 30 ›› Issue (2): 1-5.DOI: 10.3969/j.issn.1001-5485.2013.02.001


Hydrochemical Characteristics of Groundwater in Kuji Water Source Area in Ordos Basin

ZHANG Le-zhong1 , XU Tian-zhu2   

  1. 1.School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710064, China; 2.Changjiang River Water Resources Commission, Wuhan 430010, China
  • Received:2012-07-11 Revised:2012-10-17 Online:2013-02-01 Published:2013-02-06


On the basis of analyzing hydrogeological conditions, the spatio-temporal variation of hydrochemical characteristics of groundwater in Kuji water source area of Ordos basin is systematically researched. The chemical composition, spatial distribution, and variation of hydrochemical type were affected by geographic, geomorphic and runoff conditions. Results showed that hydrochemical type changed as a whole along the direction of groundwater flow from  the peripheral watershed towards the interior and from the internal watershed towards the peripheral. The main negative ion gradually changed from HCO3 to HCO3•Cl and further HCO3•SO4•Cl, and then SO4•Cl. In vertical direction, close hydraulic connection between the middle layer and shallow layer groundwater was found, and their partition was not obvious. Due to close hydraulic connection in vertical direction for Cretaceous aquifer of huge thickness and the depth of groundwater, the groundwater quality is less affected by seasonal change.

Key words: groundwater, hydrochemical characteristics, variation regularity, Kuji water source area 

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