Human Influence Index

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The Human Influence Index (HII) is a measure showing direct human influence on ecosystems using 8 measures of human presence.[1]

Measures used[edit]

The eight measures used in computing the HII are:

  • Population Density/km2
  • Score of Railroads
  • Score of Major Roads
  • Score of Navigable Rivers
  • Score of Coastlines
  • Score of Nighttime Stable Lights Values
  • Urban Polygons
  • Land Cover Categories (urban areas, irrigated agriculture, rain-fed agriculture, other cover types including forests, tundra, and deserts)

HII values range from 0 to 64. Zero value represents no human influence and 64 represents maximum human influence possible using all 8 measures of human presence


  1. ^ Sanderson, E.W., M. Jaiteh, M.A. Levy, K.H. Redford, A.V. Wannebo, and G. Woolmer. 2003. The Human Footprint and The Last of the Wild. BioScience 52, no.10 (October 2002): 891-904

External links[edit]