Possible Uses of the Map: Useful for teachers and students who are interested in the global distribution of anthropic tension zones. Global modelers may be able to use the data for small scale analysis.
Data
Source: Land Quality map, USDA-NRCS, Soil Survey Division, World Soil Resources, Washington D.C. Population density map, Tobler, W., V. Deichmann, J. Gottsegen, and K. Maloy. 1995. The global demography project. Technical Report TR-95-6. National Center for Geographic Information analysis. Univ. Santa Barbara, CA. 75 pp. Biodiversity hotspots, Myers, N. et al., 2000. Biodiversity hotspots for conseration priorities. Nature, 403:853-858.
Data Aggregation and Reliability: The map data is rasterized on a 2 minute grid cell.
Data Definitions: Three impact classes are defined based on land quality and population density. Biodiversity hotspots are outlined and labeled.
Data Disclaimer: Country boundaries are not authoritative.
Database Manager: Paul Reich, Geographer, World Soil Resources. Email: paul.reich@usda.gov