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2014-07-21T10:32:08Z

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:Slovak term: [[Slovenský termín]]
# Arid areas means areas, other than polar and sub-polar regions, in which the ratio of annual precipitation to potential evapotranspiration falls within the range from 0.05mm to 0.65mm.
# without moisture; excessively dry; parched and barren; specifically; having insufficient rainfall to support agriculture, usually less than 10 to 15 inches annually.
# lacks humidity

==Explanation==
"Desertification is a land degradation problem of major importance in the arid regions of
the world."

Dregne, H. E. 1986. Desertification of arid lands. In Physics of desertification, ed. F. El-Baz
and M. H. A. Hassan. Dordrecht, The Netherlands: Martinus, Nijhoff.

==Example==
With up to 58% of the country’s land area being classified as arid or semi-arid, nearly
one-third of China’s land suffers from the effects of desertification.

Sand and dust storms are natural events that occur widely around the world in arid and
semi-arid regions, especially in subtropical latitudes. (Global Alarm: Dust and Sandstorms
from the World’s Drylands. United Nations, 2001)

==References==
* Elaboration of an International Convention to Combat Desertification in countries experiencing serious drought and/or desertification, particularly in Africa. Final text of the Convention. UN General Assembly. A/AC.241/27, 12 September 1994

* Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002. [http://unabridged.merriam-webster.com]
* Symons, J. M., Bradley, Lee C. Jr. and Cleveland, T. C. 2000. The Drinking Water Dictionary. American Water Works Association.

==Links==
* [http://apps.who.int/thelexicon/ WHO — The Health and Environment Lexicon]
* [http://www.unccd.int United Nations Convention to Combat Desertification]

[[Category:EN]]

Arid zones - História úprav

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