| Criterion | What It Captures | Examples |
|---|
| Physiography (Landforms) | Relief, elevation, slope, bedrock structure | Mountains, plateaus, plains, valleys, dunes, karst |
| Climate | Temperature, precipitation, seasonality, extremes | Köppen types: desert, Mediterranean, humid continental, tundra |
| Vegetation / Biomes | Plant communities, structure, species composition | Tropical rainforest, temperate deciduous, boreal forest, grassland, chaparral |
| Hydrology | Surface/groundwater, drainage patterns, wetlands | River basins, lake districts, aquifer systems, deltas |
| Soils | Parent material, horizon development, fertility | Mollisols (prairie), Oxisols (tropics), Spodosols (boreal), Aridisols (desert) |
| Geology / Bedrock | Rock type, age, structure, mineral resources | Shield, platform, orogen, rift, volcanic field |
Human & Integrated Criteria
| Criterion | What It Captures | Examples |
|---|
| Land Use / Land Cover | Human modification of surface | Cropland, pasture, urban, forest, wetland, mining |
| Settlement Patterns | Population density, urban form, rural morphology | Nucleated villages, dispersed farms, megacities, frontier |
| Economic Activity | Dominant livelihoods, resource basis | Pastoralism, intensive ag, manufacturing, services, extraction |
| Cultural Landscape | Imprint of beliefs, traditions, history | Terraced rice, hedgerows, sacred groves, vernacular architecture |
| Political / Administrative | Boundaries, governance, policy regimes | National parks, watershed districts, metropolitan areas |
Classification Systems in Practice
- Physiographic Provinces (US - Fenneman): 24 provinces → 85 sections (e.g., "Blue Ridge Mountains," "Central Lowland")
- Ecoregions (WWF / EPA / Omernik): Biotic + abiotic; 4 levels (Domain → Division → Province → Section)
- Biomes (Whittaker / Olson): Climate + vegetation global types (14 terrestrial)
- Cultural Landscapes (UNESCO / Sauer): Human-nature interaction over time
- Anthromes (Ellis & Ramankutty): Human-driven global patterns (dense settlements, croplands, rangelands, wildlands)
Key Insight
Boundaries are transitional zones (ecotones), not sharp lines. The "best" distinguishing characteristics depend on the question: tectonic history? → geology/physiography. Biodiversity? → climate/vegetation/soils. Land management? → land use/hydrology/political. Sustainable planning? → all of the above, integrated.
Wanderlust World