目录 .20 20 21 -3藻株的培养 23 24 24 第三章结果 26 .26 26 41 42 43 2002至2013年春季重点站位浮游硅藻的小型化趋势 45 ..47 。49 : 49 .50 52 54 第四章讨论 56 。56 57 58 58 59 59 60 万方数据 目录 60 60 6l 第五章总结与展望 63 。63 。64 参考文献 65 攻读硕士期间参与的科研课题及发表论文 74 致谢 75 万方数据 Contents Contents Abstract in Chinese ....................... .. ...............I Abstract ... ... . .. .................. .. ...III Chapter . ...... . . ...1 The main characters and taxonomic studies of diatom 2 The taxonomy munity study method 4 Sample observation in LM ..4 Sample observation in SEM 4 Sample observation in TEM ..4 Population analysis method in phytoplankton ..5 Red tide ..5 Red tide and its damage 5 Cause ofred tide...................................................................... ..........6 Prevention and con仃ol ..7 Red tide in the off-shore sea in China...................................................7 Overview on Changjiang Estuary and its adjacent areas ..9 Long-term changes of munity .12 Typical species--Skeletonema spp. .13 Morphologial characteristic ofSkeletonema spp ..13 The diversity and distribution of Skeletonema China .1 4 &dohrnii and S marinoi ..15 Responses of Skeletonema’S morphology to the changing environment ......................................................................................................... ..........16 The significance ofthis study .16 Chapter and method