Palynological studies of the samples from the Chang-chang Basin was made so as to quantitatively reconstruct the climate of Hainan Island during the Early Tertiary.

• 对长昌盆地的孢粉样品和木化石进行了实验分析，在孢粉分析的基础上，对海南岛早第三纪的古气候进行了初步重建。