安徽菜子湖早春开花植物花粉形态及生态意义

STUDY ON POLLEN MORPHOLOGY AND ECOLOGICAL FACTORS OF FLOWERING PLANTS IN EARLY SPRING FROM THE CAIZIHU LAKE IN ANHUI PROVINCE

采用光学显微镜和扫描电镜对安徽安庆菜子湖早春开花植物15科22种2亚种的花粉形态进行了观察和研究。对这些植物的生态因子,包括地理位置、海拔高度、年降水量、年积温及生境进行了调查和归纳。在此基础上,根据该区域内相同或相似的生态环境条件下分布的现代植物各种花粉类型,间接得出一定花粉类型综合特征所指示的现代气候和环境,为利用菜子湖湖泊孢粉资料来研究区域气候和环境变化提供现代孢粉学资料和依据。

Pollen morphology of 22 species and 2 subspecies representing 15 families from the Caizihu Lake in Anhui Province was examined and described under light microscope(LM) and scanning electron microscope(SEM).The main ecological factors of these plants was investigated including altitude(4—25 m),annual precipitation(1 326— 1 368 mm),annual accumulated temperature(5 100—5 300℃,≥10℃) and habitat.The results show a possible correlation between the pollen morphology and the main ecological factors of these flowering plant in March in the study areas,which is significant for estimating the palaeovegetation,palaeoclimate,paleaoenvironment and climatic variation.