> On Jan 21, 2020, at 12:04 AM, Martin Koppenhoefer <dieterdre...@gmail.com>
> if the sheets are the topmost thing before the air of the atmosphere, surface
> would be fine
as an FYI, I am only interested in mapping any of these types of things if they
are clearly visible all the time and installed permanently (present year to
year), as they are a visible. somethign that would go in the surface= tag.
Most farming plastic (like the ones used to grow vegetables) is not mappable,
as it is only present 3 months of the year and is constantly changing location
in a farm field year to year.
Similarly, if a soil stabilizer / sheeting / plastic is permanently visible on
the surface it should be mapped as a surface, but if it is buried and not
visible - like most landscaping paper buried in the ground - then it should
rightly be ignored.
if someone wants to come up with an embankment:stabilized=mesh (or whatever)
tag for known stabilized slopes, thats fine with me, but I am not pursuing
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