[1]XIA Meng,MA Long,JILILI·Abuduwaili.The Water Chemical Characteristics and Its Influence Factors in Middle and Lower Reaches of Manasi River Basin[J].Research of Soil and Water Conservation,2015,22(02):136-140,146.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 02
Page number:
136-140,146
Column:
Public date:
2015-04-28
- Title:
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The Water Chemical Characteristics and Its Influence Factors in Middle and Lower Reaches of Manasi River Basin
- Author(s):
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XIA Meng1, MA Long2, JILILI·Abuduwaili2
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1. College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China;
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
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- Keywords:
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hydrology; hydrochemical characteristics; influencing factors; hierarchical cluster analysis; Manas River
- CLC:
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X142
- DOI:
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- Abstract:
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Hydrochemical investigations of 28 surface water samples were conducted in middle and lower reaches of Manas River Basin. In this study, hierarchical clustering method and PIPER diagram were used to anayze the hydrochemical characteristics and its influence factors. The result shows that: 1) the pH of water samples in the study area has little difference, but the differences in total dissolved solids (TDS) and major-ion (Mg2+, Ca2+, Na+, K+, SO42-, HCO3- and Cl-) composition were obviously signifcant. In this study area, the fresh water and high salinity water distribute here. The order of the average concentrations of major cations in Manas River Basin is Na+ > Ca2+ > Mg2+ > K+, and the sequence of concentrations for major anions is SO42- > Cl- > HCO3-. The coefficients of variation of K+ and HCO3- are relative small in water samples, otherwise, the ions (Cl- and Na+) have the biggest values among the seven major ions; 2) the surface water of the Manas River Basin belongs to four hydrochemical types (Ca2+-HCO3-, Na+-SO42-, Ca2+-SO42-, Na+-Cl-). The Ca2+-HCO3- type accounts for 78.6% of the total samples, however, there are three water samples with Na+-SO42- type, two samples with Ca2+-SO42- type, and only one sample with Na+-Cl- type in this area. The result of hierarchical clustering analysis showed that chemical characteristics in surface water had obvious spatial variability. Overall, the changes of hydrochemical characteristics of Manas River Basin are mainly due to spatial differences of water evaporation and soil salinity leaching into surface water bodies, which induced the differences in hydrochemical types of surface waters.