Abstract: Sampling undisturbed lacustrine sediment is a critical job for environmental research.The recovery and undisturbedness of samples have direct effect on the environmental research results.

• 中文摘要: 在湖泊环境研究中，淤泥质沉积物取样是一项很重要的工作，样品的取心率和原状性直接影响了环境研究的结果。