arid biogeographic zone

arid biogeographic zone

[′ar·əd ¦bī·ō‚gē·ō′graf·ik ‚zōn]
(ecology)
Any region of the world that supports relatively little vegetation due to lack of water.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.