[Tagging] Mapping deforestation

Warin 61sundowner at gmail.com
Mon Mar 11 23:55:33 UTC 2019

On 12/03/19 02:32, Peter Elderson wrote:
> you can use landcover, it has about 160K uses now by 6000 users, but 
> you should know that
> a. landcover is not currently rendered by OSM Carto.
> b. THe proposal states that "All areas in the landcover features 
> ofnatural <https://wiki.openstreetmap.org/wiki/Key:natural>=*will be 
> transfered tolandcover 
> <https://wiki.openstreetmap.org/wiki/Key:landcover>=*. ...The 
> tagslanduse <https://wiki.openstreetmap.org/wiki/Key:landuse>=grass 
> <https://wiki.openstreetmap.org/wiki/Tag:landuse%3Dgrass>,landuse 
> <https://wiki.openstreetmap.org/wiki/Key:landuse>=forest 
> <https://wiki.openstreetmap.org/wiki/Tag:landuse%3Dforest>andlanduse 
> <https://wiki.openstreetmap.org/wiki/Key:landuse>=railway 
> <https://wiki.openstreetmap.org/wiki/Tag:landuse%3Drailway>will be 
> transfered tolandcover 
> <https://wiki.openstreetmap.org/wiki/Key:landcover>=*." This is 
> certainly not going to happen any time soon.

And it is incorrect. landuse=railway is a use of the land, it does not 
indicate a land cover.

> If you decide to use landcover for existing area's, use it in addition 
> to current mapping. For instance, if you replace landuse=grass with 
> landcover=grass, or natural=wood with landcover=trees, most renderings 
> suddenly will show these areas as grey. I would not recommend that, in 
> fact you'll get a storm of protest! So in these cases, you use 
> landcover in addition to landuse, and when landcover gets rendered 
> (which I'm sure it will, some time) you can alter landuse without 
> greying the map.
Not all present landuse tags are landcovers.
> To add patches of trees and grass in an area with landuse=residential, 
> industrial or leisure, you can use landcover, though it will not yet 
> show op on OSM Carto.

Some of the tags relevant when mapping land covers are the keys 
natural=*, landcover=*, building=*, sub keys surface=* and the one value 
The landuse=residential, industrial or leisure are not relevant to land 
cover as they may have different land covers within their boundaries.
> Also, major editors allow entering landcover, but have no special 
> support for landcover tags.
> Of course, if you make your own map style for the project, you can 
> make landcover show up, just remember that the standard OSM Carto map 
> does not.
> Fr gr Peter Elderson
> Op ma 11 mrt. 2019 om 15:16 schreef Lorenzo Stucchi 
> <lorenzostucchi95 at outlook.it <mailto:lorenzostucchi95 at outlook.it>>:
>     Hi all,
>     I’m Lorenzo, the vice-president of PoliMappers, the YouthMappers
>     chapter in Politecnico di Milano, we are going to organize a
>     mapathon in Milan talking about deforestation, in collaboration
>     with the Semillero Geolab UdeA, a Colombian chapter of YouthMappers.
>     We will would like to map land-cover in an area near the Amazonian
>     forest, the mappers will be people that have few experience in
>     mapping so we are thinking to map basic elements in landuse and we
>     found this proposal [1] on map basic elements.
>     The idea was to map: bareland, artificial surface and forest.
>     Should be a good idea to map following this idea?
>     Thanks for all the possible answer.
>     Best regards,
>     Lorenzo Stucchi
>     [1] https://wiki.openstreetmap.org/wiki/User:Rudolf/draft_landcover
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