Northern bleached softwood kraft (NBSK) is the paper industry's benchmark grade of pulp.
[1] NBSK from British Columbia is mainly from Lodgepole Pine, with a significant amount of White Spruce.
Redcedar, douglas fir, hemlock, and larch make up a smaller portion of the chip furnish.
The only single species NBSK is of plantation Radiata pine from New Zealand, Brazil and Chile.
The mix might vary much with the season as norway spruce grows on wetter lands that is easier accessed in the winter when the ground is frozen.