南襄盆地南部更新世孢粉组合与古气候研究

PLEISTOCENE SPOROPOLLEN ASSEMBLAGES AND CLIMATE IN SOUTH NANXIANG BASIN, HUBEI PROVINCE

This paper has systematically studied the Pleistocene sporopollen of the South Nanxiang Basin. Based on the distribution and abundance of the palynomorphs 8 sporopollen assemblages have been described in the paper. These assemblages indicate that the Pleistocene vegetation type possesses characters of the north subtropical and temperate climate, therefore, there is no evidence of the elimate of glacial period.The temperatures were nearly the same, but arid and humid climates were obviously alternated in different periods. The Pleistocene climates could be divided into four arid periods and three humid periods.