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The Arid West Water Quality Research Program (AWWQRP) This website has moved to an new location. This page will redirect you to the new site in 10 seconds. The new site is at http://www.pima.gov/wwm/wqrp/index.htm. You may click this link to go to the new site immediately or wait to be redirected. Pima County Public WorksCopyright © 2004, All rights reserved. Privacy Statement / Disclaimer / Webmaster / Mission Revised December 8, 2005 10:55 AM

Our site has moved! We are no longer at http://www.ussl.ars.usda.gov Please update your bookmarks with our new address: http://www.ars.usda.gov/pwa/riverside/gebjsl You will be redirected in a few seconds. If you are not redirected, please click on the above link. USDA-ARS George E. Brown, Jr. Salinity Lab 450 W Big Springs Rd Riverside, CA 92507-4617 951-369-4814

Reproduced, with permission, from: Dregne, H. E., and N-T. Chou. 1992. Global desertification dimensions and costs. In Degradation and restoration of arid lands. Lubbock: Texas Tech. University. Global Desertification Dimensions and Costs H. E. Dregne and Nan-Ting Chou Introduction Desertification has been defined by the United Nations Environment Programme (UNEP) as land degradation in arid, semi-arid, and dry subhumid areas resulting mainly from adverse human impact. This 1991 definit ...

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This website is the result of a demonstration project funded by the International Arid Lands Consortium to design and create a WWW site for information on soils of arid regions of the U.S. and Israel. It was designed to provide information to assist those who would manage their impact on the soils of arid regions for sustainability. This site has been moved. It's now located at: http://cals.arizona.edu/OALS/soils/ Last update: 14 October 2004