Abstract:An artificial reef is one or more objects of natural or human origin deployed purposefully on the seafloor to influence physical, biological, or socioeconomic processes related to living marine resources, which is applied to improve marine environment and protect fishery resources.Large numbers of artificial reef projects have been carried out in China since the beginning of 21st century, so as to restore marine habitat. It is practically very important for future construction of the artificial reefs that the fishery resources enhancement of the artificial reef can be scientifically evaluated. There are 3 types of fish and macro-invertebrates (i.e. Type I,Ⅱ,and Ⅲ) in artificial reef area.Type Ⅱanimals inhabit surrounding areas and do not contact artificial reef, whose biological data can be obtained by trawling. Based on the survey data of fishery resources in artificial reef area of Shengsi in Zhejiang Province, the density of fishery resource is analyzed, and the variation tendency of the fishery resource density is simulated by using improved Logistic model. The parameters of the model are calculated via Genetic Algorithm method. The result indicates that the original ecological carrying capacity is approximately 6.00~8.03 ind/km·kW, and the enlarged carrying capacity is approximately 4.4~5.89 ind/km·kW of type Ⅱfish and macro-invertebrates in the artificial reef area. The carrying capacity has periodically fluctuated along with the change of seasons.
