On Wed, 17 Jun 2020 at 19:50, Little Maps <[email protected]> wrote:
> Hi folks, I’m planning on mapping tree cover in an area with lots of pine > and eucalypt plantations as well as native forests, and want to check on > the preferred way of tagging plantations in Australia before I begin. > > I realise that plantations don’t render in the standard OSM render and > that there’s no international consensus on landuse=forest vs natural=wood > etc, but see that as beside the point. There are so few plantations mapped > as such in eastern Australia that it should be reasonably easy to develop a > consistent approach. Do you think the following method is optimal to > distinguish the three forest types? > I think the common understanding is landuse=forest is for "Managed woodland or tree plantation maintained by human to obtain forest products". and natural=wood for bush land which has trees (or more than just shrubs). So it doesn't matter what the species kind is and if it's native or not, it's more how the area is designated and used which makes the distinction. > > 1. Native eucalypt forests (not plantations, may or may not be used for > forestry): > > natural=wood > leaf_type=broadleaved > leaf_cycle=evergreen (somewhat superfluous in Aus but comprehensive) > source:geometry... etc. > > 2. Pine plantations (invariably Pinus radiata in my region) > > natural=wood > plantation=yes > leaf_type=needleleaved > leaf_cycle=evergreen (again superfluous in Aus but comprehensive) > > 3. Hardwood plantations (mostly blue gum here) > > natural=wood > plantation=yes > leaf_type= broadleaved > leaf_cycle=evergreen (again superfluous in Aus but comprehensive) > > Thus, “plantation=yes” distinguishes plantations from natural forests, and > leaf_type=broadleaved vs needleleaved distinguishes pine from euc > plantations. > > According to Taginfo, all existing tags for “plantation=yes” in Australia > (about 1200 of them, and nearly all in WA) use “landuse=forest” and none > use “natural=wood”. However I’m assuming that this group prefers to use > “natural=wood” over “landuse=forest” - but I may be wrong. > > Thanks once again for your helpful advice. Best wishes Ian > > > > _______________________________________________ > Talk-au mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-au >
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