To map the 'human footprint', representing in some sense the sum total of ecological footprints of the human population, in a continuum of human influence stretched across the land surface, revelaing through its variation the major pattern of human influence on nature.
Type of Study:
Synthesis of published spatial data.
Overall, 83% of the land's surface, and 98% of the area where it is possible to grow rice, wheat, or maize, is directly influenced by human beings (HII> 0). Human footprint scores are calculated for every terrestrial area globally.
Protect 'last of the wild' areas as identified by this study; target conservation practices according to level of human influence; recognise that humans are stewards of nature, whether we like it or not.
Response variable :
Global terrestrial human footprint
Sanderson E. W., Jaiteh M., Levy M. A., Redford K. H., Wannebo A. V. & Woolmer G. (2002) The human footprint and the last of the wild. BioScience 52, 891-904.