The larger the stocks of wood on earth, in the form of living trees or wooden construction material in buildings, the less CO2 there is in the atmosphere and the cooler the earth remains. So, taking land for the production of bio-fuels from forests means speeding up global warming, because bio-fuel crops store much less carbon than trees.
因为光合作用，木材可以储存碳。地球上木材的储量越大，不管它们是以活的树还是建筑物中的木质建材出现，空气中二氧化碳的含量都会更少，而地球也会变得更凉爽。所以，从森林中掘取土地用于生产生物燃料意味着加速全球变暖，因为生物燃料作物比树储存的碳要少得多。