The direct and indirect contributions of ecosystems to human wellbeing which have an impact on survival and quality of life. There are four types of ecosystem services: provisioning, regulating, cultural and supporting services:
A provisioning service is any type of benefit to people that can be extracted from nature;
A regulating service is the benefit provided by ecosystem processes that moderate natural phenomena. Regulating services include pollination, decomposition, water purification, erosion and flood control, and carbon storage and climate regulation;
A cultural service is a non-material benefit that contributes to the development and cultural advancement of people, including how ecosystems play a role in local, national, and global cultures; the building of knowledge and the spreading of ideas; creativity born from interactions with nature (music, art, architecture); and recreation; and
Supporting services are the natural processes, such as photosynthesis, nutrient cycling, the creation of soils, and the water cycle that sustain ecosystems. These processes allow the Earth to sustain basic life forms, whole ecosystems and people.