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Stem Diameter (SDS)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: sds.ttl

Name

stemDiameter

Datatype

RealInterval

Definition

The average diameter of the tree trunks in an area, measured at a height of approximately 1.5 metres or 4.5 feet on the high side (if on a hillside) above the surface of the ground.

Description

Commonly referred to as the 'diameter at breast height' (dbh). For trees up to 2 metres high, the stem diameter is measured at the mid-point between the ground and the stem tip.

Accepted

2013-10-18

Defined by

DFDD

Physical quantity

length

Recommended unit

Metre (m)

Used by

• AL270 Industrial Farm
• EA040 Orchard
• EA030 Plant Nursery
• EA031 Botanic Garden
• EE060 Bank Vegetation Zone
• BH095 Wetland
• EC015 Forest
• EC050 Grove
• EC005 Tree

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.