[OSM-talk-be] Land-use mapping with OSM in Belgium

[Lionel Giard]

Hi,

Concerning the wood-tag : I was personally using the first approach Here
<https://wiki.openstreetmap.org/wiki/Forest> where it says that
natural=wood is for area covered by tree, and natural=forest is for area
managed for land forestry (like plantation in the Ardennes). And most of
the time, the only "wood" areas are the place around motorway intersections
for example (between the roads, you often have an area covered by tree,
without real management).

I agree with you about fenced area that correspond to pasture/meadow. But I
would also include, based on local knowledge only, some non-fenced area as
landuse=meadow when it is an area for cutting only (to feed cattle for
example) like it is often the case in some part of Wallonia. It's sometimes
area that are unsuitable for agriculture, but used just to feed cattle
without letting them graze on it (like when it is too dangerous).
And for any uncultivated area, composed of mostly grasses and herbaceous,
there always is the natural=grassland
<https://wiki.openstreetmap.org/wiki/Tag:natural%3Dgrassland> tag.

Every other cultivated area, should then only be orchard or farmland. The
only problem can be when a combination of different types of agriculture
occur at the same place, then i don't know how to map.

Lionel
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2017-04-25 11:40 GMT+02:00 Gerard Vanderveken <Ghia at ghia.eu>:

> Hi,
>
> One remark for the wood-tag:
> The tag natural=wood
> <https://wiki.openstreetmap.org/wiki/Tag:natural%3Dwood> is sometimes
> used for forests, but since natural=wood would refers to unmanaged, natural
> forests, IMHO it should not be used in Belgium since no more forests are
> completely natural: every patches of forest in Belgium has experienced
> human interventions in the recent history.
> In several forests Zoniënwoud, Meerdaalwoud, ... are some nature reserves.
> Places where nature can have its course and where only very minimal human
> intervention take place (eg clearance of paths)
> I think these reserves (Joseph Zwaenepoel, Kerselaerplein, Everzwijnbad,
> Pruikemakers) could qualify as wood.
>
> I think meadow is a good tag for the grass lands. Conversion between
> farmland and grass land takes somtetimes place but mosttimes as incidental
> crop harvest of grass.
> Making a pasture requires also fencing, which is not a temporary measure.
>
> So, when there is a grass land without fence surrounded by farmland, it is
> likely farmland.
> Other grass lands are usually fenced and are meadow.
> Local knowledge will tell if it is to be one or the other
>
> Regards,
> Gerard.
>
> Julien Minet wrote:
>
> Hi list,
>
> Following some discussions about landuse=farmland|meadow some times ago in
> this list, I've written an article here (http://www.nobohan.be/2017/
> 04/20/landuse-osm-belgium/) about land-use mapping in Belgium: what could
> be the best practices adapted to the Belgian landscape. Of course, there's
> matter for discussions about that topic ;-)
>
> I think this text could be used to make a page on
> https://wiki.openstreetmap.org/wiki/WikiProject_Belgium/Conventions/,
> since it discuss what are the local conventions for land-use mapping in
> Belgium.
>
> Do you also want to put this text on osm.be, similarly to the Marc Gemis
> articles? Maybe a better place for discussions...
>
> Cheers,
>
> Julien
>
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