LEI Mi1,2, ZHOU Jinlong1,2, FAN Wei1,2, ZHANG Jie1,2
（1. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China;
2. Xinjiang Hydrology and Water Resources Engineering Research Center, Urumqi 830052, China）
Abstract：Groundwater is an important drinking water source in Xinjiang plain. To explore the chemical evolution process of groundwater in Aksu plain, Xinjiang, data of 30 groundwater sampling points obtained in 2017 were analyzed for mathematical statistics, Piper diagram, Gibbs diagram, ion ratio, mineral stability field diagram and reverse hydrogeochemical simulation. The results showed that the average concentration of cation in groundwater decrease in Na+>Ca2+>Mg2+>K+, and that for anionic concentration is in SO42->HCO3->Cl-. Ions in groundwater accumulate gradually from piedmont clinoplain to alluvial plain. The chemical composition of groundwater is not only originated from the dissolution of evaporite and carbonate, but also from silicate such as albite and anorthite. The dissolution intensity of different minerals declines in the following order, rock salt>evaporite>carbonate>silicate. The finer soil particles with a longer reaction path is more conducive to the ion exchange.
Key words：Xinjiang; Aksu; plain area; groundwater chemistry; evolution characteristics
EARTH AND ENVIRONMENT Vol.48, No.5, Tot No.337, 2020, Page 602-611
