The Hydrochemical Characteristics of Hulun Lake in August 2015
In order to analyze the characteristics of hydrochemistry of Hulun Lake,ions sources and their controlling factors,water samples were taken on August 14,2015.The results showed that pH of the water in Hulun Lake varied from 9.06 to 9.23 and the water was weak alkaline.The pH of the water in southwest part of the lake was higher than that in northeast part.The content of total dissolved solids was in the range of 670-843 mg/L and the average content was 784.17 mg/L,and which was generally higher in the northeastern and central parts of the lake.The water hardness on CaCO3 was 141.80-250.36 mg/L,and the mean hardness was 210.20 mg/L,and the water was hard water.The predominant cations were Na+,accounted for 80％ of the number of total cations;and the dominant anions were HCO3-,accounted for 73％ of the number of total anions.The water chemistry type was [C]Na I or HCO3—Na+,and which was due to the effects of evaporation and carbonate rocks.The ions sources of Hulun Lake did not come from atmospheric precipitation,but were controlled by evaporation-crystallization and rock weathering interaction.The human activities were of a certain impact on water chemical characteristics.Since the 1960s,The evolution of the water of Hulun Lake was the alternating of weak saltwater and freshwater,which was of a positive response to the change of the regional climatic characteristics.
NETL
NSTL
万方数据
维普
