*"...Said this, why not try to use CORINE [1] definitions?"* Thank you Voschix to mention this paper, searching the ISBN code (ISBN 92-826-2578-8) I was able to download it from researchgate.net (it's a pdf with 120 pages). Unluckily it's only about part of Europe (from 62°N to 28°S, from 14°W to 29°E), 12 European countries participated in this project.
The working scale of the project was 1/100000, and the smallest mapping unit was 25 hectares. About desertic lands we're discussing, this is their classification: 3. Forests and semi-natural areas 3.3 Open Spaces with little or no vegetation 3.3.1 Beaches, dunes, and sand plains 3.3.2 Bare rock 3.3.3 Sparsely vegetation 3.3.4 Burnt areas 3.3.5 Glaciers and perpetual snow <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Mail priva di virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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