Thanks,There are various guidelines to get there. Not to sound elusive, but I'd ask what is your reason for needing DBH - then that will help get the best answer.
For example, I'd probably look at it differently for an appraisal, big tree nomination, timber volume calculation (assume that is not the case here!), and treatment (certain pesticides and growth regulators are applied based on DBH...I'd not only look at actual DNH, but also canopy volume for those...does the diameter make sense for the canopy volume?)
wrap a tape around both stems, divide by 6.28 and call it good!I agree with ATH for the most part but I'll play the contrarian.
Due to location I bet that was a seedling that came up on its own. Looks like two separate trees fused together. It may be one tree that was cut off at the ground when a small sapling and then two sprouts survived or were selected. Birch in the nursery are often cut at ground level and then several sprouts are selected to make for the multiple stemmed birches we see planted in the landscape.
I'd be temped to measure around both stems to get DBH. It looks like it may be hard to measure a single stem as they look grown together at breast high.
Or buy a DBH tape, I carry one in my truck all the time.wrap a tape around both stems, divide by 6.28 and call it good!
Just one?Or buy a DBH tape, I carry one in my truck all the time.
Jeff
lol, yeahJust one?
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