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Volume 37 Issue 4
Aug.  2018
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ZHU Danni, ZOU Shengzhang, ZHOU Changsong, LI Lujuan, XIE Hao. Identification of hydrochemical sensitive factors of karst groundwater in different functional urban areas[J]. CARSOLOGICA SINICA, 2018, 37(4): 484-492. doi: 10.11932/karst20180402
Citation: ZHU Danni, ZOU Shengzhang, ZHOU Changsong, LI Lujuan, XIE Hao. Identification of hydrochemical sensitive factors of karst groundwater in different functional urban areas[J]. CARSOLOGICA SINICA, 2018, 37(4): 484-492. doi: 10.11932/karst20180402

Identification of hydrochemical sensitive factors of karst groundwater in different functional urban areas

doi: 10.11932/karst20180402
  • Publish Date: 2018-08-25
  • With the development of urbanization in Southwest China, the environmental pressure of karst groundwater has increased rapidly in urban areas and the water quality has deteriorated significantly. To further address this issue, this work collected 86 sets of groundwater samples from four typical cities(Zhunyi, Guilin, Guiyang, Loudi)in the karst areas of southwestern China mainland. Analyses of descriptive statistics, variation coefficients and principal component were conducted to reveal the chemical characteristics of karst groundwater and sensitive factors susceptible to human activities. The results show that the concentrations of electric conductivity, total hardness, TDS,Na+,Mg2+,Cl -,SO2-4,NO-2 and Mn are highest in industrial zones, the second in commercial residential areas, and the lowest in conjunctions of suburbs. While the contents of K+,NH+4 and NO-3are the highest in commercial residential areas. In the study areas, chemical compositions of groundwater generally have higher spatial variability. The sensitive factors of industrial zones include SO2-4,I- and Fe, and the sensitive indexes of commercial residential areas are Na+,NO-2 and NO-3 , while the main sensitive indicators of suburbs are Na+,Mg2+ and NO-2.

     

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