通過對巴丹吉林沙漠丘間湖泊和古日乃、雅布賴、阿拉善右旗等地及其周圍淺層地下水離子化學成分分析，探討了沙漠地區(qū)湖水與地下水化學成分特點、水化學類型、空間變化和湖水補給來源。結(jié)果顯示，巴丹吉林沙漠湖泊水的pH、鹽度、TDS和電導率均遠遠大于地下水。湖水樣品中Na+和Cl-含量占絕對優(yōu)勢，大多數(shù)鹽度較高的湖泊屬于Na(K)-Cl-(SO4)型，個別鹽度較低的微咸湖屬于Na-(Mg)-(Ca)-Cl-(SO4)-(HCO3)型。地下水的化學類型多數(shù)為Na-(Ca)-(Mg)-Cl-(SO4)-(HCO3)型，屬微咸水，個別為Na-Cl-SO4型的咸水。沙漠東南部湖群水的pH值、鹽度、TDS和電導率比較低，呈微堿性，屬微咸湖；而北部湖群水的pH、鹽度、TDS和電導率遠遠大于東南部湖群，呈中等堿性，為鹽水湖。湖水離子化學特征顯示沙漠東南部湖群自南向北的演化趨勢為微咸湖→咸水湖→鹽水湖。湖水離子化學成分短時間序列變化指示，近9年寶日陶勒蓋、巴丹東湖、巴丹西湖、諾爾圖、呼和吉林湖水中的大多數(shù)離子的含量有所降低，表明其近9年來淡水補給量增多。湖水化學成分與湖水位高度顯示，巴丹吉林沙漠湖群湖水流向是由東南流向西北。水化學成分和水位分布高度表明，該區(qū)沙漠湖水主要來自當?shù)亟邓�補給和來自沙漠東南緣雅布賴山和南緣的黑山頭山地降水的補給，，而來自祁連山區(qū)來水補給的可能性很小。

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