Table 3.
Input variables into ecological production function models (EPFs) to model ecosystem services metrics.
| Ecosystem Service | Input Environmental Condition Variables | Output Ecosystem Service Metric |
|---|---|---|
| Air Quality | ||
| Canopy cover | Rate of air pollutant removal | |
| Food, Fiber, and Fuel Provisioning | ||
| None (decline at fixed rate over time) | Raw material reserves | |
| None (constant over time) | Commercial fishery landings | |
| Area of forest cover | Forest area allocated for timber removal | |
| Area of each land use/land cover class | Nitrogen fixation | |
| Area of each land use/land cover class | Carbon sequestration | |
| Precipitation, temperature, area of each land use/land cover class | Soil water content | |
| None (decline at fixed rate over time) | Energy reserves | |
| Greenspace | ||
| None (constant over time) | % of people who did non-consumptive activity within a mile of their home | |
| Area of each land use/land cover class | Biodiversity | |
| Area of water, population density | Modelled area of blue space per person | |
| None (constant over time) | National Parks acreage | |
| None (constant over time) | % area designated rural park or wildlife area | |
| None (constant over time) | Number of National Park visitors within a state | |
| Area of each barren, forest, grassland, wetland classes | Modelled area of natural lands | |
| Water Quality | ||
| Precipitation, temperature, area of each land use/land cover class | Sediment load | |
| Precipitation, temperature, area of each land use/land cover class | Nutrient load | |
| Precipitation, temperature, area of each land use/land cover class | Fecal coliform load | |
| Water Quantity | ||
| Area of each land use/land cover class | Rainwater retention capacity by soil | |
| None (constant over time) | Water Sustainability Index |