<div dir="ltr">Moor (or possibly fell) covers a decent amount of Corine data imported across Europe as natural=heath. In effect natural=heath on OSM no longer means heath. It may mean any of the following:<br><ul><li>Upland vegetation in its broadest sense: unimproved upland grassland, drier blanket bogs (covered by heather), Racometrium heath, Bilberry dominated heath, Shrubby vegetation dominated by brooms (at least in France & Spain), and no doubt a few others I've missed.</li><li>Moorland in Britain, which is probably a slightly smaller subset of the above</li><li>Lowland heathland: places like the Surrey Heaths, Suffolk Sandlings, Norfolk Brecks etc.</li><li>Other less obvious lowland areas known as heaths: particularly with large swathes of bracken and patches of birch.</li></ul><p>When this thread first started I thought we could work to remove these multiple meanings, but having seen what places with natural=heath from Corine imported-data in the Cevennes, suspect that this is an unrealistic objective.</p><p>The alternatives are to start sub-typing natural=heath, with heath or heath:type. The main category to identify in the short-term are the classic lowland heaths which are scarce & threatened in the UK.</p><p>Wikipedia has a <a href="https://en.wikipedia.org/wiki/Heaths_in_the_British_National_Vegetation_Classification_system">partial tabulation</a> of the formal heath categories in the National Vegetation Classification, which may help as background reading. I'm sure that pretty much all communities in the U-group (calcifugous grassland & montane), several Mires (e.g., M15 & M16), and even some calcicolous upland grasslands are included in current natural=heath.</p><p>At a more practical level the <a href="http://jncc.defra.gov.uk/PDF/pub10_handbookforphase1habitatsurvey.pdf">JNCC Phase 1</a> guide recognises 6 heath categories, of which 4 are relatively common: wet & dry heaths, and their respective mosaics with grassland. Anything where the peat depth in the soil is NOT regarded as a heath, but will be a Mire community (pennine moorland will be largely blanket bog in this terminology).</p><p>Both <a href="https://wiki.openstreetmap.org/wiki/Key:plant_community">NVC</a> & <a href="https://wiki.openstreetmap.org/wiki/Proposed_features/Key:habitat">Phase1</a> have relevant pages on the wiki for (slightly) further info. NVC is clearly far too technical for just about everyone, but Phase1 is probably usable with a small bit of guidance. <br></p><p>Probably the best way to take this forward is to compile good examples of places people are likely to know (particularly in National Parks) which have a known classification AND a reasonable number of usable images on Geograph. Wales is the easiest place to do this because the whole of the country was mapped using Phase1.</p><p>Regards,</p><p>Jerry<br></p><p><br></p><p><br></p></div><div class="gmail_extra"><br><div class="gmail_quote">On 25 September 2017 at 12:28, ael <span dir="ltr"><<a href="mailto:law_ence.dev@ntlworld.com" target="_blank">law_ence.dev@ntlworld.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Thu, Feb 09, 2017 at 10:10:07AM +0000, SK53 wrote:<br>
> than anything they reflect that OSM as a project lacks good tags for many<br>
> of these boreo-temperate upland features, and whilst that is true there<br>
<br>
I have been changing some "heath" areas of Dartmoor to "moor". But I<br>
notice that the wiki claims that this is deprecated.<br>
<br>
Since most of these are large areas which really cover a variety of<br>
vegetation, I can't see that any of the "established" tags are really<br>
appropriate. "Moor" is exactly right.<br>
<br>
If forced to use the documentated tags, I would go for<br>
natural = grassland;wetland as the best approximation despite the<br>
fact that not everything is wet nor is grass.<br>
<br>
Of course, it only makes sense for coarse-grained approximate mapping,<br>
and more localised accurate tags are the ideal.<br>
<br>
Should "moor" or something similar be restored and supported by<br>
renderers?<br>
<br>
ael<br>
<br>
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