Abstract: In this paper, the Shannon-Wiever diversity index H'(S), Pielous species uniform index (J),Margalef specics abundancc index (d) and McNaughton dominant degree (D) are used to conduct the numcrical analpeis of species diversity of bcnthic invertebrate community in rochy intcrtidal zone of Shengsi archipclago. The rcsults show that from neritic zone to off shore, thevalucs of H'(S), Jand d have an increasing trend, and Dis in reverse. In each sampling section, bigger valucs of H'(S) and Jappear in different seasons, the former in Spring and Autumn, and thc later in Spring and Winter. d value is different for each section, bigger Dvalueappcars in Summer and Auttunn. Whiftaker-Fairbanks community coefficient and Bray-Curtiscommunity similarity index are used to deal with the community similarity and cluster analpeis.The results show that the benthic invertebratc community in rocky intertidal zone of Shengsiarchipelago can be clustered into two type. The community structure of benthic invertebrates innear-shore is an interim type betwecn those in neritic zonc and off-shore.

Key words: Shengsi archipelago, Intertidal zone, Community structure, Species diversity, meteorological disaster, extreme disaster, climate resource, climate change, spatio-temporal change, winter planting