[Tagging] Mapping deforestation wikipage

Lorenzo Stucchi lorenzostucchi95 at outlook.it
Fri Mar 15 06:45:16 UTC 2019


We don’t propose anything related with time because we think that this information can came with the historical evolution of the area, so this information is inside the history of every polygons.

The idea is to have mapathon in different time, when new imagery are available and after check what is changed searching in the all database.

I hope that we explain this temporal “problem”.

Lorenzo Stucchi

Il giorno 14 mar 2019, alle ore 23:40, Warin <61sundowner at gmail.com<mailto:61sundowner at gmail.com>> ha scritto:

On 14/03/19 06:49, Lorenzo Stucchi wrote:
Hi all,

After some discussion about the idea of this project, we think to better capt all the idea to create a wiki page with the purpose of better understand the problem and find the better way to tag this situation.

So we create a wiki page https://wiki.openstreetmap.org/wiki/PoliMappers/mapping_deforestation where is possible to discuss these thematics, let us known your idea.

I think what your trying to map is the reduction of trees over time (deforestation).

Open Historic Map is the place to map what has happened over time. Here you can map the presence of trees at a particular point in time from satellite imagery at that time. This can give you the 'deforestation' information without trying to map 'here is a lack of trees'.

Open Street Map is the present, not the past. So OSM is not the place to map the change in tree cover.While some may be happy with mapping an area with a tag that says 'here is a lack of trees', that lack of trees does not tell you that the area was covered by trees at some time in the past. An example would be an area coved by rock, an old village area. I think what you are after is that change in tree cover, and that is not mapped in OSM.

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