[Tagging] Feature Proposal - RFC - (Ground)
Michael Montani
michael.montani at un.org
Thu Jul 16 10:02:40 UTC 2020
According to the document you shared<http://www.fao.org/3/x0596e/X0596e02a.htm#P1974_116516>, bare soil is mentioned in:
Primarily non-vegetated > Terrestrial > Bare areas
And within Bare areas, Bare soil is an available category, being distinguished by Bare rock whether the terrain is consolidated or not.
Within Bare soil, further classification is made depending on a "stoniness" percentage (5 to 40% Stony, >40% Very stony) and on soil macropatterns (II level).
I think this could be useful material for us to make a decision. natural=bare_soil targeting all the areas of unconsolidated ground material could be used whether or not a groundy area hasn't already a tag that suits better its representation (e.g. natural=wetland + intermittent=yes, landuse=quarry...).
Thanks,
--
Michael Montani
GIS Consultant, Client Solutions Delivery Section
Service for Geospatial Information and Telecommunications Technologies
United Nations Global Service Centre
United Nations Department of Operational Support
Brindisi | Phone: +39 0831 056985 | Mobile: +39 3297193455 | Intermission: 158 6985
E-mail: michael.montani at un.org<mailto:mail at un.org> | www.ungsc.org<http://www.ungsc.org>
________________________________
Da: Martin Koppenhoefer <dieterdreist at gmail.com>
Inviato: mercoledì 15 luglio 2020 10:08
A: Tag discussion, strategy and related tools <tagging at openstreetmap.org>
Oggetto: Re: [Tagging] Feature Proposal - RFC - (Ground)
Am Mi., 15. Juli 2020 um 09:45 Uhr schrieb Martin Koppenhoefer <dieterdreist at gmail.com<mailto:dieterdreist at gmail.com>>:
If you are interested in reading some interesting thoughts about landcover classification, there is the FAO landcover classification system, thought to be useful globally:
http://www.fao.org/3/X0596E/X0596e00.htm
there are only 8 main classes:
http://www.fao.org/3/X0596E/X0596e10.gif
and you can easily determine them through a decision matrix:
1. primarily vegetated or primarily non-vegetated?
2. terrestrial or aquatic/flooded regularly?
3. cultivated/man made/artificial or natural?
then they add additional properties like life forms, crops, leaf types, climate, ...
>From the combination of these properties and classes, detailed land cover classes are determined:
http://www.fao.org/3/x0596e/X0596e02a.htm#P1974_116516
E.g. here:
TABLE 3.4
Example of the formation of land cover classes
EXAMPLE: "NATURAL AND SEMI-NATURAL TERRESTRIAL VEGETATION" (A12)
Classifiers used
Boolean formula
Standard class name
Code
Life form and cover
A3A10
Closed forest
20005
Height
A3A10B2
High closed forest
20006
Spatial distribution
A3A10B2C1
Continuous closed forest
20007
Leaf type
A3A10B2C1D1
Broad-leaved closed forest
20095
Leaf phenology
A3A10B2C1D1E2
Broad-leaved deciduous forest
20097
2nd layer: LF, C, H
A3A10B2C1D1E2F2F5F7G2
Multi-layered broad-leaved deciduous forest
20628
3rd layer: LF, C, H
A3A10B2C1D1E2F2F5F7G2
Multi-layer broad-leaved deciduous forest with emergents
20630
Cheers,
Martin
PS: And the best: LCCS comes as a run time application, you do not need to have virtual basic installed !!11!!!
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