The producers of (1) ecosystem generally include green plants, lotus flowers, green algae, black algae and so on. Capable of photosynthesis; The vertical structure of biome 7 refers to stratification, and plant stratification can make full use of environmental resources such as light.

The function of "constructed wetland" to purify sewage is realized through the interaction between producers, that is, different types of aquatic plants and decomposers, that is, microorganisms; The self-regulation ability of the ecosystem is limited, so when excessive sewage enters the constructed wetland, the artificial ecosystem will be destroyed.

(2)

(3) The energy of constructed wetland park includes photosynthesis of plants fixed by solar energy and energy contained in sewage 7 and organic matter 7. B7a represents the intake of primary consumers, b represents assimilation amount, e represents the energy flowing to decomposers, and d represents the energy lost by primary consumers.

(4) The flowering of lotus provides pollinators with a lot of physical and chemical information, which shows that information transmission has the function of regulating interspecific relations and maintaining the stability of the ecosystem.

Answer: (1) Lotus, green algae, black algae, etc. NBS 5 & NBS 5 & NBS 5 vertical and NBS 5 & NBS 5 & NBS 5 microorganism and NBS 5 & NBS 5 self-regulation ability.

(2) such as b&; nbs5& ampnbs5

(3) Solar energy and chemical energy &; Nbs 5& nbs 5& nbs 5& nbs 5& nbs 5 respiratory energy loss.

(4) regulating the interspecific relationship of organisms and maintaining the stability of the ecosystem.