Very nice & long burning wood there My shoulder season wood didn't make it past the 1st round: Spring & Fall shoulder wood, Cold day wood, Windy day wood, sub-zero day wood. it's my all season wood.
When I had too, I burned spruce. Since I started using the state firewood permits ($10/cord) With the state permit, I've become kinda a wood snob. Spruce & birch at the cutting area, I work a little harder getting only birch but; with birch having 23.6 mil BTU / cord & spruce having 18.1 mill BTU/cord That way I get the best bang (BTUs) for my $$-buck. I use the other wood I scrounge up (& birch uglies) for the outside fire pit. In the fire pit stacks I have cottonwood, aspen, spruce & alder (+ birch uglies) & I make the splits smaller
No tamarack/larch available there? That chart seems wrong, based on half-a-dozen other references. Tamarack should be somewhere around 20 MBTU/cord unless you have a completely different species in AK.
In Alaska, the Tamarack just about all died off in the 70s , Larch beetle infestation. There's a few in the wild , most are in yards.