The Late Oligocene-Early Pleistocene sporopollen assemblages and paleovegetation succession of core ZkA01 in Hetou town, Leizhou Peninsula of Guangdong Province

The data of Cenozoic sporopollen fossils obtained from ZKA01 drill hole in Leizhou Peninsula of Guangdong Province were systematically analyzed.Through the analysis of spore-pollen data, 8 sporopollen assemblages can be recognized from this drill hole.In the late Oligocene, the vegetation types in this area reflected the obvious vertical distribution of vegetation; coniferous forests were distributed in the surrounding mountains, and deciduous broad-leaved and evergreen broad-leaved mixed forests grew in the plain.In the early and middle Miocene, the vegetation types in this area evolved from deciduous broad-leaved and evergreen broad-leaved mixed forests into evergreen broad-leaved forests and tropical rainforests.In the late Miocene, the vegetation types in this area evolved into coniferous forests in mountain areas and deciduous broad-leaved and evergreen broad-leaved mixed forests in plain areas.During the Pliocene-Early Pleistocene period, the vegetation types in this area were deciduous broad-leaved and evergreen broad-leaved mixed forests, and the temperature changes fluctuated significantly.The climate change characteristics of Late Oligocene to Early Pleistocene period were reflected by spore-pollen assemblages, which had good comparability with the trend of global climate change.