Abstract: Wetland is a type of ecosystem located in the transitional zone between land and water body. Based on its unique ecosystem structure, process and function, wetland provides various services to human society, which are of great significance for maintaining regional and national ecological security and sustainable development. Based on the basic concepts and implications of wetland and its ecosystem services, we discussed the main contents of current wetland ecosystem service researches from the following aspects: (1) the evaluation of service value; (2) trade offs and synergies among services; (3) biodiversity and wetland ecosystem services; (4) impacts of climate change; (5) impacts of land use change. Future works should strengthen the monitoring scope and intensity of basic parameters of wetland ecosystem services and the research of the relationship between ecosystem services and human well-being, and focus on wetland ecosystem disservices and ecosystem services of small wetlands.

Key words: value evaluation, synergy/tradeoff, biodiversity, climate change, land use, ecosystem disservice, small wetland.