巴丹吉林沙漠湖泊与地下水的补给来源及化学组成(英文)

编号 zgly0001585784

文献类型 期刊论文

文献题名 巴丹吉林沙漠湖泊与地下水的补给来源及化学组成(英文)

作者 邵天杰  赵景波  周旗  董治宝  马延东 

作者单位 CollegeofTourismandEnvironmentScience  ShaanxiNormalUniversity  KeyLaboratoryofDisasterMonitoringandMechanismSimulatingofShaanxiProvince  BaojiUniversityofArtsandSciences  ColdandAridRegionsEnvironmentalandEngineeringResearch 

母体文献 Journal of Geographical Sciences 

年卷期 2012年03期

年份 2012 

分类号 P641.3 

关键词 chemicalcomposition  desertlake  spatialvariation  hierarchicalclusteranalysis  supplysource  BadainJaranDesert 

文摘内容 Based on the analysis of ion chemical composition of lake water and shallow groundwater in the Badain Jaran Desert, this paper discussed the characteristics of ion chemical composition, 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 lake water are greater than those of groundwater. The ion con-tents of water samples are dominated by Na+ and Cl?. Most of the higher salinity lakes are Na (K)-Cl-(SO4) type, and a few of low salinity lakes belong to the Na-(Mg)-(Ca)-Cl-(SO4)-(HCO3) type. Most of the groundwater is Na-(Ca)-(Mg)-Cl-(SO4)-(HCO3) type, attributed to subsaline lake, and only a few present the Na-Cl-SO4 type, flowing under saline lake. The pH, salinity, TDS and electrical conductivity in the southeastern lakes are relatively low, and there are slightly alkaline lakes. The pH, salinity, TDS and electrical conductivity in the northern lakes are much greater than those of the southeastern lakes, and the northern lakes are moderately alkaline and saline ones. In the southeastern part of the Badain Jaran Desert, the ion chemical characteristics of the lake water from south to north show a changing trend of sub-saline →saline→hypersaline. The changing trend of chemical compositions of ions in recent 9 years indicates that most of the ion contents have a shade of reduction in Boritaolegai, Badain, Nuoertu and Huhejilin lakes, which state clearly that the amount of fresh water supply is increasing in the 9-year period. The ion chemical composition of the lake water reveals that the flow direction of lake water is from southeast to northwest in the Badain Jaran Desert. The ion chemical composition, moisture content of sand layer water level height and hierarchical cluster analysis of the lake water and groundwater demonstrate that the lake water is mainly supplied by local rainfall and infiltration of precipitation in Yabulai Mountains and Heishantou Mountain, and the supply from the Qilian Mountains is almost impossible.