渤海湾西岸歧口—狼坨子滩涂表层孢粉和藻类研究

STUDY OF SPORO-POLLEN AND ALGAE IN SURFACE SEDIMENTS ON TIDAL FLAT ALONG WEST COAST OF BOHAI SEA GULF

笔者对渤海湾西岸歧口～狼坨子滩涂表层沉积物中采集的9块样品进行了孢粉分析,共鉴定出30余种陆生植物花粉和蕨类孢子、两种水生植物花粉和一些淡、咸水藻类。计算了花粉浓度和百分含量,并分析了藻类含量与潮位的关系。发现木本植物花粉在高潮滩含量低,在低潮滩含量高。另外地方性花粉多,区域性花粉少。刺球藻的分布与潮水波及的大小有关,呈高潮滩<中潮滩含量<低潮滩含量的特征。它反映了海相环境的增强。

Nine surface samples collected on the tidal flat between. Qikou and Langtuozi were examined. A total of 30 types of sporopollen of terrestrial plant, 2 of aquatic plant and several algae were identified. Pollen concentrations and pollen percentages are computed and the relation between the tidal level and the quantitative of pollen are discussed in this paper. It is found that the content of xylophytas pollen is lower in high tidal flat than in low tidal flat, that there are more local pollen found in type and quantitative than the regional pollen, and that the distribution of Hystri-chospeare is linked to the tidal range, with the content becoming less in each of the latter in the sequence of low, middle, high tidal flats.