Arid regions of the Western United States as mapped in 1893
Aridity is the condition of geographical regions which make up approximately 43% of total global available land area, characterized by low annual precipitation, increased temperatures, and limited water availability.[1][2][3][4] These areas tend to fall upon degraded soils, and their health and functioning are key necessities of regulating ecosystems’ atmospheric components.[5][3]
^Dunkerley, David, (2020),The Ecohydrology of Desert Environments: What Makes it Distinctive?, Encyclopedia of the World's Biomes, Elsevier, Pages 23-35, ISBN 9780128160978, https://doi.org/10.1016/B978-0-12-409548-9.11803-22.
^FAO. Elaboración de un Programa Mundial Sobre Agricultura Sostenible en Zonas Áridas en Colaboración con el Marco Mundial Sobre la Escasez de Agua en la Agricultura en un Clima Cambiante. http://www.fao.org/3/nd412es/nd412es.pdf
^ abPerez-Aguilar, L. Y., Plata-Rocha, W., Monjardin-Armenta, S. A., Franco-Ochoa, C., & Zambrano-Medina, Y. G. (2021). The Identification and Classification of Arid Zones through Multicriteria Evaluation and Geographic Information Systems—Case Study: Arid Regions of Northwest Mexico. ISPRS International Journal of Geo-Information, 10(11), 720. https://doi.org/10.3390/ijgi10110720