对青藏高原东部边缘地区、藏北、藏南及藏中地区50多个湖泊水体现生介形类和水化学样品进行了同步采样.现生特异湖浪介的成体体长与其栖息地的水化学资料的对比结果表明:特异湖浪介的成体体长与湖水的电导率存在明显的定量关系.提出了应用特异湖浪介的成体体长指标,定量恢复古盐度的经验公式,并应用该经验公式重建了错鄂CE-2孔的古盐度,通过与其他重建古环境方法的比较,对该方法进行了验证. In the eastern edge of the Qinghai-Tibet Plateau, more than 50 lakes in northern Tibet, southern Tibet and central Tibet were sampled synchronously from the sedimentary and hydrochemical samples. The comparison of chemical data shows that there is a significant quantitative relationship between the adult body length of lake and the conductivity of lake water, and the empirical formula for quantitatively restoring paleosalinity with specific body length index of specific lake waves is proposed. The empirical formula reconstructed the paleo-salinity of the hole in CE-2 in Ercao, and verified the method by comparison with other methods of reconstructing paleoenvironment.