杭嘉湖平原土壤中孢粉和微体古生物反映的母质类型及古地理环境探讨

STUDY ON SOIL PALYNOLOGY AND MICROPALEONTOLOGY AS INDICATORS OF SOIL PARENT MATERIAL TYPES AND THE PALAEOGEOGRAPHICAL ENVIRONMENTAL EVOLUTION IN HANGZHOU-JIAXINGHUZHOU PLAIN

对杭嘉湖平原８１个土样进行了孢粉和微古测定，其中有孢粉组合的样品４９个，检出有孔虫的样品１３个，按此划分为河口海湾相、泻湖相、湖沼相、平原河流相四大母质类型。并分析了全新世中期以来的平原古地理环境。

Eight one Soil samples taken from the Hangzhou-Jiaxing-Huzhou plain were studied by the determination of the spore-pollen and micropaleontological fossils.Among those soil, 41 samples had spore-pollen combination, and 13 samples had foraminifera.Based on spore-pollen combinations and foraminifera, four rinds of parent materials cauld be classified, including estuarine deposits, lagoon deposits.limnic deposits and plain-river deposits. The palaeogeographical environmental evolution of the plains from mid-Holocene epoch was also discussed.