论文部分内容阅读
分析了福建省8个主要港湾底牺生物的种类组成、区系特点、数量分布、主要优势种分布以及底栖生物与沉积物类型的关系等。共获得461种，以软体动物种类最多，甲壳类和多毛类分别居第2和第3位，其区系特征以热带亚热带暖水性种类以及广温性种类占绝对优势。全省平均生物量56.2克／米~2；平均栖息密度179个／米~2。主要优势种有24种。在不同沉积物类型中，以砂质粉砂和粉砂质砂的种类最多，平均生物量以粘土质粉砂较大，平均栖息密度则以粉砂质砂最高。
The species composition, fauna characteristics, quantitative distribution, distribution of dominant species and relationship between benthic organisms and sediment types in the bottom of eight major harbor in Fujian Province were analyzed. A total of 461 species were found, with the largest number of mollusc species and the second and third among crustaceans and polychaetes respectively. Its floristic characteristics were characterized by the warm subtropical warm water species and the broad-heat species. The province’s average biomass of 56.2 g / m ~ 2; average habitat density of 179 / m ~ 2. There are 24 main dominant species. Among the different types of sediments, sandy silt and silty sand are the most abundant species. The average biomass is clay silty sand and the average habitat density is the highest for silt sand.