Diameter is an expression of the average diameter (cm) of trees at breast-height (1.3 m), calculated using a quadratic mean (QM_DBH). Available here as a diamter raster (GeoTIF) with a 20 m pixel resolution.

Download: HereThe Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Diameter (QM_DBH) is an expression of the average diameter (cm) of trees at breast-height (1.3 m), calculated using a quadratic mean whereby individual trees are weighted in proportion to their basal area. QM_DBH is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing QM_DBH data in the following 5 cm categories.Domain: [NULL, 0…60].RANGELABELREDGREENBLUE0 <= QM_DBH < 30NANANA3 <= QM_DBH < 8563811818 <= QM_DBH < 13106811514413 <= QM_DBH < 18157214910818 <= QM_DBH < 2320921807823 <= QM_DBH < 28251572027028 <= QM_DBH < 33302222246333 <= QM_DBH < 38352552204838 <= QM_DBH < 43402551902743 <= QM_DBH < 4845255160548 <= QM_DBH < 53502521291553 <= QM_DBH < 5855248983458 <= QM_DBH <= 60602446754For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.