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What the area of influence of the INLD?
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The INLD classifies Earth drylands according to the concept provided by the Millennium Ecosystem Assessment (2005).
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Drylands are limited by soil moisture resulting from low rainfall and high evaporation rates. Besides, drylands show a gradient of increasing primary productivity, ranging from:
•Hyper-arid (<25mm),
•Arid (<25-250mm),
•Semiarid (<250-500mm),
•Dry subhumid (<500-750mm)
(Willians 2000; Safriel and Adeel, 2005)
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Study sites of INLD (UNEP-WCMC, 2007).
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