Subject
- Habitat (Ecology)14
- Conservation of natural resources13
- Roads13
- Cities and towns12
- Ecological zones12
- Home range (Animal geography)12
- Administrative and political divisions11
- Climatology, Meteorology and Atmosphere10
- Land use, Rural10
- Unincorporated areas10
- Vegetation surveys10
- Wildland-urban interface10
- Forests and forestry9
- Metropolitan areas9
- Natural areas9
- Timber9
- Streets8
- Ecological risk assessment7
- Biotic communities6
- Bodies of water6