利用透射电镜研究了温州早、中全新世剖面,九龙江地区晚全新世中期剖面和镇海晚全新世剖面的微型硅藻(细胞大小为2～20μm)的组成和丰度.共计硅藻14属20种(包括变种).Cyclotellacaspia是九龙江地区晚全新世中期剖面中的优势种;温州中全新世剖面的优势种为Cyclotellastriata;温州早全新世剖面和镇海晚全新世剖面中Thalassionemanitzschioides是优势种.微型硅藻在几个剖面中所占的比例变化较大,以在九龙江地区晚全新世中期剖面所占的比例最高,可达77.4%,表明微型硅藻在沉积硅藻中占有重要的地位.
【英文摘要】 The species composition and density of nanodiatoms in sedimental sections were studied by TEM for the sedimental samples from different sedimental sections in Early and Middle Holocene in Wenzhou city in Zhejiang province?in later Holocene in estuary of Jiulong River in Fujian province and in Zhenhai city in Zhejiang province. In total, 20 diatom species (including varieties) belonging to 14 genera of Bacillariophyta were described and the ecological distribution of each species was described together with ...国家自然科学基金(40076016)资
