Abstract: This paper analyzed the marine ecosystem services from the aspects of ecosystem component, ecological process, and biodiversity. Based on the similar effects and characteristics, marine ecosystem services were classified into 15 types. Although many of the organisms and ecological processes in marine ecosystem were still unknown, the connections between its services and their sources were built, aimed to better understand the services implementation process. Marine ecosystem services were originated from biological components, and implemented by certain ecological process. Therefore, any damage to the ecosystem’s components and processes would weaken, and even lose the ecosystem services, which would further a ffect human being’s benefits and welfare. To understand the sources and impleme ntation processes of marine ecosystem services was of significance to realize the importance of marine ecosystem and to provide scientific supports to marine ecosystem restoration, and helpful to the services management and the sustainable development of whole society.

Key words: SARS, Coronavirus, Gene recombination, Life evolution, Combined pollution