Leslie Holdridge

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Professor Leslie Rensselaer Holdridge (born September 29th, 1907 in Ledyard, Connecticut, USA; died June 19th, 1999 in Easton, Maryland, USA) was an American botanist and climatologist.

[edit] Overview

Diagram of life zone classifications.
Diagram of life zone classifications.

In his famous 1947 paper, he defined "life zones" using three indicators:

  1. Mean annual biotemperature (average temperature, after data values below 0°C or above 30°C have been eliminated)
  2. Total annual precipitation
  3. The ratio of mean annual potential evapotranspiration to mean total annual precipitation.

[edit] See also

[edit] References

  • Holdridge, L.R. (1947) Determination of world plant formations from simple climatic data. Science, 105, 367--368.


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