Based on the analyzed water samples collected from the five runoff control sections in the Fenghuoshan basin during June 2008, this paper integrated used the descriptive statistics, the correlation matrices, Gibbs figure and the principal composition analysis to study the concentrated characteristics of the major dissolved inorganic ions and their causes. The result shows that the dominating chemical compositions of river water are Na~+, Ca~(2+), SO_4~(2-), and concentration of most major ions in the five runoff sections are mainly presented on a single-peak type. The shallow soil water transport with a high concentration of ions makes the greatest contribution to the total dissolved solids (TDS) in the water. Rock weathering and evaporation play major roles in the changes of water chemistry in the Fenghuoshan basin. The research basin is strongly influenced by dissolved evaporates, followed by dissolved carbonates. The preliminary analysis of the causes of high water concentration ions is subject to the combined effect of evaporation, soil freeze-thaw and short duration of active period in runoff.
NETL
NSTL
万方数据
维普
