Water Chemistry of the Lakes and Groundwater in the Badain Jaran Desert
详细信息
- 责任者：Shao Tianjie (College of Tourism and Environment Science ; Shaanxi Normal University ; Xi’an 710062 ; China) ; Zhao Jingbo
- 刊名：Acta Geographica Sinica
- 出版年：2011
- 卷期：66(5)
- 关键词：地下水 ; groundwater ; 水化学 ; hydrochemistry ; 内蒙古 ; Inner Mongolia
- 页码：p.662-672
- 图表：illus., 3 tables, 38 refs.
- 分类号：1701
- issnNo：ISSN0375-5444
- isbnNo：CN11-1856/P
摘要
Based on the analysis of ion chemical composition of lake water and shallow groundwater in the Badan Jaran Desert, this paper discussed the characteristics of chemical composition, type of the lake water, spatial variation of lake water, and possible supply sources of lake water and groundwater in the desert areas. The results show that the pH, salinity, TDS and electrical conductivity of the lakes are greater than those of groundwater. The ion contents of the water samples are dominated by Na + and Cl-. Most of the higher salinity lakes are Na(K)-Cl-(SO4) type, and a few low-salinity lakes are Na-(Mg)-(Ca)-Cl-(SO4)-(HCO3) type. Most of the groundwater bodies are Na-(Ca)-(Mg)-Cl-(SO4)-(HCO3) type, attribute brackish lake, and only a few present a Na-Cl-SO4 type, flowing under salt water lake. The pH, salinity, TDS and electrical conductivity of the southeastern lakes are relatively low, and there are slightly alkaline lakes, while the pH value, salinity, TDS and electrical conductivity of water in the northern lakes are much greater than those of the southeastern lakes, so the northern lakes are mederately alkaline and salt water ones. In the southeastern part of the Badan Jaran Desert, the chemical characteristics of ions of the lakes water show a changing trend from south to north in the order of brackish lake→salt water lake→Salina. The changing trends of chemical compositions of ions in recent 9 years indicate that most of the ion contents have a shade of reduced in Boritaolegai, east Badain, west Badain, Nuoertu and Huhejilin Lake, which states clearly that the amount of fresh water is increasing in the 9-year period. The chemical compositions of the lake water reveal that the flow direction of lake water is from the southeast to northwest in the Badan Jaran Desert.