I think it is a good idea to consider a threshold of vegetation present on the 
ground in order not to confuse the proposed natural=bare_soil with other 
landcover tags as natural=scrub or natural=grassland.

According to the CORINE landcover definitions we mentioned before, sparsely 
vegetated areas are defined as areas with less than 50% vegetation covering. 
Thus, < 30% seems good to me.
As for the FAO classification, I think bare_soil can be classified as any 
compacted bare area with ground (meant as: any area of silt or clay soil, as 
well as loam (mixed soil with clay/silt/sand) and mixed organic (including 
humus) and mineral soil). This tag should be applied whenever the groundy area 
cannot be tagged with already existing tags, mainly due to the environmental or 
geological nature of that area (as, for example, natural=wetland + 
intermittent=yes).

Also, good images in the talk 
page<https://wiki.openstreetmap.org/wiki/Talk:Proposed_features/Ground> are 
present, with [13] and [15] being my favourites. I also think not all the 
bare_soil areas are deserts or desert pavements, and I don't consider mapping 
ground as mapping the un-mapped.

I would like to raise a last round of consultations, after which I will proceed 
with the voting.

Thanks,
Michael


________________________________
Da: mbranco2 <[email protected]>
Inviato: giovedì 16 luglio 2020 16:06
A: [email protected] <[email protected]>
Oggetto: Re: [Tagging] Feature Proposal - RFC - (Ground)

natural=bare_soil  sounds good to me, maybe it should be useful to set a 
maximum vegetation percentage (30% ?)
If not, someone could say "Hey, there are two bushes in that area, it's not 
bare soil"


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