为研究天津潮间带贝类资源的分布特征, 2017年5月, 作者对天津滩涂开展贝类资源调查.共采集贝类30种, 分属2纲、4亚纲、10目、19科, 在汉沽鲤鱼门、大港减河口、大港滨海湿地分别采集贝类20种、19种、19种; 高潮区、中潮区、低潮区分别采集贝类11种、22种、10种; H'值大小顺序为鲤鱼门>滨海湿地>减河口, 中潮区>高潮区>低潮区; 经济贝类主要分布于中潮区, 鲤鱼门与减河口滩涂的优势经济种均为菲律宾蛤仔(Ruditapes philippinarum),生物量分别为562.8、828.5 g/m2,滨海湿地的优势经济种为四角蛤蜊(Mactra veneriformis),生物量为1403.8 g/m2.对比2013年,大港减河口滩涂的贝类种数及生物量均升高, 鲤鱼门滩涂的贝类种数增加, 滨海湿地滩涂的贝类资源为首次报道.%Based on the analysis of molluscs samples collected in the intertidal zones along three beaches from Tianjin in May 2017, the feature of the distribution of molluscs' resources were derived. The shellfish species components in this area included 2 classes, 4 subclasses, 10 orders, 19 families, and 30 species. There were 20, 19, and 19 species in Liyumen of Hangu, Duliujian river estuary, and Dagang Coastal wetland, respectively; 11, 22, and 10 species in the high tidal region, middle tidal region, and low tidal region, respectively. The sequence of Shan-non–Weaver index (H') was as follows: Liyumen > Coastal wetland > Duliujian river estuary, middle tidal zone >high tidal zone > low tidal zone. Economic shellfish distributed mainly in the middle tidal zone. The dominant economic species were Ruditapes philippinarum in Liyumen and Duliujian river estuary,but Mactra veneriformis in Dagang Coastal wetland with the average biomass of 562.8, 828.5, and 1403.8 g/m2respectively. Compared with 2013, the species and biomass increased in Duliujian river estuary, the species were increased in Liyumen beach, and it was reported for the first time in the Dagang Coastal wetland.
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