World Dryland Areas

The original dataset developed by the MA is a subset of the aridity zone map created by CRU/UEA, UNEP/GRID for the World Atlas of Desertification. Aridity zones were derived from an Aridity Index (AI) which is calculated as the ratio of precipitation to potential evapotranspiration. Zones include...

Data and Resources

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Additional Info

Field	Value
Source	https://resources.unep-wcmc.org/products/789fcac8959943ab9ed7a225e5316f08
Author	UNEP-WCMC
Maintainer	UNEP-WCMC
Last Updated	March 9, 2023, 14:17 (UTC)
Created	March 9, 2023, 12:16 (UTC)
GUID	unep-wcmc-rsrc-geospatial-dataset-789fcac8959943ab9ed7a225e5316f08
Issued	2022-06-23T14:25:00.606+00:00
Language	en
Modified	2022-11-23T16:45:31.080+00:00
Publisher email	info@unep-wcmc.org
Publisher name	UNEP-WCMC
Theme	Geospatial Dataset
avg_rating	0
citation	Full citation: UNEP-WCMC. (2007). A spatial analysis approach to the global delineation of dryland areas of relevance to the CBD Programme of Work on Dry and Subhumid Lands. Dataset based on spatial analysis between WWF terrestrial ecoregions (WWF-US, 2004) and aridity zones (CRU/UEA; UNEPGRID, 1991). Dataset checked and refined to remove many gaps, overlaps and slivers (July 2014). Cambridge (UK): UNEP-WCMC. References: Miles, L., A.C. Newton, R.S. DeFries, C. Ravilious, I. May, S. Blyth, V. Kapos and J.E. Gordon. (2006). A global overview of the conservation status of tropical dry forests. J. Biogeogr. 33: 491–505. Sorensen, L. (2007). A spatial analysis approach to the global delineation of dryland areas of relevance to the CBD Programme of Work on Dry and Subhumid Lands. UNEP-WCMC, Cambridge.
data_type	webpage
date_published	2007-01-01
icon_url	https://resources.unep-wcmc.orghttps://data-gis.unep-wcmc.org/portal/sharing/rest/content/items/789fcac8959943ab9ed7a225e5316f08/info/thumbnail/thumbnail.JPEG
license	unep-wcmc-general
num_views	697
short_description	The original drylands dataset was developed to define the Millennium Ecosystem Assessment (MA) dryland system boundary. Sörensen (2007) used this map to further delineate dryland areas of relevance to the CBD Programme of Work on Dry and Subhumid Lands. This current dataset builds on these maps to incorporate additional features to update the data to better reflect dry and sub-humid tropical forests in accordance with paragraph 13 of Convention on Biological Diversity (CBD) CoP Decision IX/17.