Hi Peter, A dehesa is not just a type of farmland, because the surface is covered by trees that are regularly pruned and used for wood, so it is a mixed usage of farmland and forestry (and pasture).
Best regards Diego El sáb., 31 ago. 2019 a las 12:47, Peter Elderson (<pelder...@gmail.com>) escribió: > It appears to be a specific type of farmland, so landuse=farmland + > farmland=dehesa would say it all and disrupt nothing. > > Mvg Peter Elderson > > Op 31 aug. 2019 om 12:25 heeft Diego Cruz <ginkar...@gmail.com> het > volgende geschreven: > > Hi Cristoph, > > Thank you for your feedback, it's really appreciated. You are completely > right when you say that dehesa might exclude similar environments in other > parts of the world, and that is of course not my intention. I just used the > word dehesa because it appears as such in Wikipedia. Among your three > proposals, I would go with landuse=agroforestry, because it would be a way > of reflecting this mixed usage of land without being too local. As for > establishing two different landuse tags for the same territory, it could be > fine for me, but I don't know if that would create rendering problems (as I > mentioned, I'm new to this). I don't think this should be resolved with > secondary tags, because a dehesa is an entity in itself and the uses of the > land are not subordinated to each other. > > I will wait for more replies before modifying my proposal. > > Best regards > Diego > > El vie., 30 ago. 2019 a las 12:00, Christoph Hormann (<o...@imagico.de>) > escribió: > >> On Friday 30 August 2019, Diego Cruz wrote: >> > >> > I have recently proposed a new tag in the Wiki, because none of the >> > existing landuse tags seem to match it. A dehesa is a type of land >> > that combines a forest with either fields or pasturelands (or both) >> > at the same time. It is extensively used in the Iberian Peninsula, >> > both in Spain and Portugal. Please see the details in my proposal >> > below: >> > >> > https://wiki.openstreetmap.org/wiki/Proposed_features/Dehesa >> >> This is certainly a valid idea for inventing a new tag and it is good >> that you open up discussion early. Let me take this as an example for >> two things that have in the past been decisive on the broader success >> of tags: >> >> * local verifiability. The primary definition of your tag is for areas >> in a certain region that are in the cultural tradition of that region >> called a certain way. You try to list a few verifiable criteria what >> not to use the tag for - but these are one sided criteria. Because >> natural=wood does not rule out use as pasture (and neither does >> landuse=orchard, which is also used for cork oak plantations), >> landuse=farmland does not rule out the presence of trees or the use as >> pasture and many savannas (for which we have no specific tag at the >> moment) are created by human influence. A good tag is one where a >> local observer, even a casual one like a traveler quickly coming >> through, can without much difficulty determine locally if the tag >> applies or not. >> >> * generic meaning. As already mentioned you draft this as a region >> specific tag although agroforestry is a practice that exists in many >> different parts of the world in different forms. Such tag will either >> stay a local speciality tag without much chance for being interpreted >> by global data users and possibly mirrored by other region specific >> tags with similar but slightly different meaning or it will morph into >> a broad umbrella tag - for example for any kind of 'area with trees >> that does not really qualify as wood/forest'. Well known examples for >> such tags are natural=fell and landuse=village_green. >> >> There are three potential tagging concepts i could imagine could be >> derived from your idea that would seem more promising in that regard: >> >> * a tag for agroforestry landuse. This of course would only be locally >> verifiable if there is active agricultural use. That would only >> qualify those dehesas that are actively used for agriculture as such. >> And it would say very little about the physical appearance and >> ecological characteristics of an area. >> >> * establishing a generic tagging concept for secondary characteristics >> of areas - like use of orchards as pasture, underbrush in a forest or >> scattered trees on a meadow. This could be quite easily implemented >> using natural:secondary=*, landuse:secondary=* etc. Dehesas would >> under such scheme be something like >> >> - landuse=farmland + landuse:secondary=orchard >> - landuse=meadow + landuse:secondary=orchard >> - landuse=orchard + landuse:secondary=meadow >> >> * creating one or more region specific secondary tags for exising >> primary tags like landuse=farmland or landuse=orchard for documenting >> the region specific ecological characteristics of the area. >> >> -- >> Christoph Hormann >> http://www.imagico.de/ >> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging >> > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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