A literature review on evaluation of agricultural ecosystem services

Agricultural ecosystem services play a key role in the sustainable development of mankind. However, certain values of the services are too often neglected as they are not directly reflected in market transactions. It is therefore important to evaluate these services. The characteristics of previous studies in this field were analyzed from the points of view of research method, content, scale and supporting disciplines. The basic problems of domestic studies were probed into from the context of ecological ecosystem completeness, study perspective, and research method perfection and fullness of content. On this basis, it is pointed out that much important progress has been made in the field of forest and grassland ecosystem and evaluation method. Some breakthroughs are also made in the field of agricultural ecosystem evaluation. However, the values of crop and fishery ecosystem services and non-market evaluation methods of ecosystem services require further studies. The values of forest and grassland ecosystems also need further exploration from the perspectives of value composition and temporal and spacial variation.