Ecosystem Goods and Services
Related to the idea of physical Commons
Typology
From an extended treatment of the topic at http://www.worldchanging.com/archives/005522.html
"Provisioning services are the products people obtain from ecosystems, such as food, fuel, fiber, fresh water, and genetic resources.
Regulating services are the benefits people obtain from the regulation of ecosystem processes, including air quality maintenance, climate regulation, erosion control, regulation of human diseases, and water purification.
Cultural services are the non-material benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experiences.
Supporting services are those that are necessary for the production of all other ecosystem services, such as primary production, production of oxygen, and soil formation." (http://www.worldchanging.com/archives/005522.html)