On Fri, Jul 10, 2020 at 8:19 AM Warin <61sundow...@gmail.com> wrote: > On 10/7/20 9:30 pm, Peter Elderson wrote: > > Looks like humus is a component of soil. So I think soil covers it, being > a top layer consisting of mixed organic and mineral matter. > > To me it is hard to imagine an area as permanently natural=bare_soil. > Wouldn't there always be some kind of vegetation within a year? > > > Not always. > > Sorry to say but some soils have been so polluted combined with the > resulting soil erosion vegetation has taken some decades to come back. > > See https://en.wikipedia.org/wiki/Queenstown,_Tasmania#Ecology >
I'd imagine that pollution and erosion would result in a surface of mineral, rather than organic soil; hence the land cover would be clay, sand, scree, or bare_rock, depending on the particle size. Even the article you cite mentions areas eroded to bare rock. These values are all available for tagging a mineral surface. -- 73 de ke9tv/2, Kevin
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
