actually it does...all CO2 emissions i.e. harmful cfc's and car and smokestack emissions that are currently released from industrial plants and the hundreds of millions of cars on the planet are the leading cause of ozone depletion producing the greenhouse gas effect, trapping these harmful chemicals in the ozone, thus warming the planet...GLOBAL WARMING, thus effecting the amount of snowfall and average earths temperature.  All these emissions are offset and converted into oxygen by trees.
So the term "trees rock" is sanctifying the fact that by reducing  logging and/or planting more trees, it fights overall climate control.  In doing so saving the sport we all love.