PEE 1.1 Human Use of the Earth Flashcards
The natural resources and ecosystem
services that keep us and other species
alive and support human economies.
Natural Capital
Natural Capital Formula
Natural Capital = Natural Resources + Ecosystem Services
Materials and energy in nature that are essential or useful to humans
Natural Resources
Processes provided by healthy ecosystems that support life and human economies at no monetary cost to humans
Ecosystem Services
Supply is continuous or expected to
last for a very long time―at least 6
billion years in the case of our sun
Inexhaustible resources
Can be replenished by natural processes within hours to centuries, as long as we do not use it up faster than natural processes can renew it
Renewable resources
Renewable resources examples
e.g., air, trees, topsoil, freshwater
Inexhaustible resources examples
e.g., solar, wind, geothermal energy
Those necessary for all other ecosystem services, and their impacts on people are either indirect or occur over a very long time period.
Supporting services
The products obtained from ecosystems
Provisioning services
Provisioning services examples
food and fiber, fuel, freshwater, genetic
resources, biochemicals, natural
medicine, and pharmaceuticals
Supporting services examples
primary production, atmospheric oxygen
production, nutrient and water
cycling, and pollination
Exist in a fixed quantity, or stock, in the earth’s crust
Nonrenewable (depletable or
exhaustible) resources
Nonrenewable (depletable or exhaustible) resources examples
e.g., fossil fuels (oil, natural gas, coal)
The benefits obtained from the regulation of ecosystem processes
Regulating services
Regulating services examples
air quality
maintenance, climate regulation,
water regulation, erosion control,
water purification and waste
treatment, regulation of disease,
and storm protection
The nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experiences
Cultural services
The waste, depletion, or destruction of any of the earth’s natural capital.
Natural Capital Degradation
Contamination of the environment by any chemical or other agent such as noise or heat to a
level that is harmful to the health, survival, or activities of humans or other organism
Pollution
Single, identifiable sources
Point sources
Dispersed and often difficult to identify
Nonpoint sources
Involves cleaning up or diluting
pollutants after we have
produced them
Pollution cleanup
Efforts focused on greatly
reducing or eliminating the
production of pollutants
Pollution prevention
When the number of users is small, this
logic works. Eventually, however, the
cumulative effect of large numbers of
people trying to exploit a widely
available or shared resource can
degrade it and eventually exhaust or
ruin it.
The Tragedy of the Commons