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<br /><br /><br />12. Jun 2018 13:22 by <a href="mailto:marc.gemis@gmail.com" target="_blank" rel="noopener noreferrer">marc.gemis@gmail.com</a>:<br /><br /><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;">How do people in GIS know how many square meter of forest there is in<br />a country based on OSM-data ?<br /></blockquote><p><br /></p><p>I would start from something like: total area of area covered by <br /></p><p>landuse=forest and natural=wood <br /></p><p>after excluding very small areas.<br /></p><p> </p><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"> Is the data suited for that ?</blockquote><p><br /></p><p>Depends on (a) where (b) what kind of accuracy is needed, forest in many regions</p><p>are unmapped or partially mapped.</p><p><br /></p><br /><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;">How can I find those places with OSM data ?<br /></blockquote><p><br /></p><p>What you exactly want to find?<br /></p><p> </p><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;">I thought I had an answer for all the above questions when<br />natural=wood, landuse=forest, landcover=trees where used "properly".</blockquote><p><br /></p><p>No, you cant. As there are conflicting tagging methods <br /></p><p>natural=wood, landuse=forest, landcover=trees are effectively synonymous.</p><p><br /></p><p>See <a href="https://wiki.openstreetmap.org/wiki/Forest" target="_blank" rel="noopener noreferrer">https://wiki.openstreetmap.org/wiki/Forest</a> for details.<br /></p><br /> </body>
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