Study on Species Composition, Quantity Distribution of Intertidal Benthos in Xiangshan Bay

The characteristics of species composition,quantity distribution and bioecology of intertidal benthos in Xiangshan Bay of Zhejiang Ningbo are analyzed in this paper.The results indicate that there are 158 species,the most of which are molluscs and crustacea accounting for 74% of all species,and some species are of high commercial value.The average biomass and density is found to be 101.1 g·m-2 and 359.2 ind·m-2,respectively.The molluscs is ranked top in terms of biomass,density of the benthos,composition of dominant and main species,as well as seasonal variation of quantity on intertidal benthos in the ecological habitat.Diversity study shows that the macrobenthic community in the region has been disturbed.