that's interesting, i'll take a deeper look later. if only i had bookmarked all the studies i've come across. i have an interest in woodland so i've been curious to learn about this and my (layperson) takeway is that logging adds a lot of carbon to the atmosphere. also, the soil stores a lot of carbon, and when you log trees, you degrade the soil and cause loss of stored carbon. (but i'm far from a scientist, just waiting for somebody who knows what they're talking about to chime in.)
Looking further it seems like there's a lot of logging practices that are worse than performing no action (assuming that the biomass provided doesn't offset something else, e.g. prevents coal from being burnt)