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Data - Statistical Data Drylands - Additional dryland areas

Drylands - Additional dryland areas

Drylands - Additional dryland areas

This indicator measures the total dryland area (in sq. km) that can be defined as additional dryland area, in a given country.

Additional drylands areas include areas that might not fall - based on the ratio of precipitation to potential evapotranspiration (P/PET) - within the intervals traditionally used to identify arid (0.06 - 0.20 P/PET), semiarid (0.21 - 0.50 P/PET) and subhumid areas (0.51 - 0.65 P/PET).

Based on expert knowledge, the following ecoregions are likely to include dryland and dry-subhumid features:

  • Selenge-Orkhon forest steppe
  • Tian Shan montane steppe and meadows
  • Northwestern Himalayan alpine shrub and meadows
  • Central Tibetan Plateau alpine steppe
  • Southeast Tibet shrublands and meadows
  • Pamir alpine desert and tundra
  • Yarlung Tsangpo arid steppe
  • Hawaii tropical low shrublands
  • North Tibetan Plateau-Kunlun Mountains alpine desert
  • Hawaii tropical high shrublands,
  • Maputaland-Pondoland bushland and thickets
  • Ascension scrub and grasslands
  • Drakensberg alti-montane grasslands and woodlands


The values of this indicator have been aggregated at the country level by ILRI, in collaboration with the ILC's Rangelands initiative, based on:

Data definitions:


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Measurement unit

Sq Km

Best value is


Related issues

Related LandVoc tags