The kelp bed is a typical offshore ecosystem,with especial ecosystem structure and abundance aquicolous resources,which made it have a complex energy structure and obvious character.By using Ecopath with Ecosim(EWE) software,a mass-balanced ecopath model of the kelp bed ecosystem in Gouqi was constructed.Through the analysis of the trophic level,energy flowing,and the ecosystem characters etc.also combining the function of kelp bed,the state of the kelp bed was estimated,and the causes were discussed here.T...