[Tagging] Mapping large areas (was natural=????)

Martin Koppenhoefer dieterdreist at gmail.com
Thu Sep 12 20:49:47 UTC 2013


2013/9/12 Bryce Nesbitt <bryce2 at obviously.com>

> What's a mountain what's a desert?  Depends where you are.
>


well, wikipedia says: "Deserts generally receive less than 250 millimetres
(10 in) of rain (precipitation) each
year.[1]<http://en.wikipedia.org/wiki/Desert#cite_note-EG-1>
Semideserts <http://en.wikipedia.org/wiki/Semi-arid_climate> or steppes are
regions which receive between 250 millimetres (10 in) and 400 to 500
millimetres (16 to 20 in)." and states that the biggest desert on earth is
the antarctic desert (quite different setting from what one usually thinks
about by the term desert, isn't it?)

For mountains it seems indeed relative, although the UN has a universal
definition for "mountainous environment" (also from WP), any of these:

   - Elevation of at least 2,500 m (8,200 ft);
   - Elevation of at least 1,500 m (4,900 ft), with a slope greater than 2
   degrees;
   - Elevation of at least 1,000 m (3,300 ft), with a slope greater than 5
   degrees;
   - Elevation of at least 300 m (980 ft), with a 300 m (980 ft) elevation
   range within 7 km (4.3 mi).

cheers,
Martin
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