The melting permafrost and increasing temperatures are both affecting the forests of Alaska.as the permafrost undert the forests melts, the spruce-bark beetle, for example,is increasing in numbers as a result of warmer winter temperatures.it usually takes about two years for these beetles to grow and reproduce in very cold weather.however, due to the increase in temperatures, Spruce-bark beetles are reproducing faster and damaging as many trees in one year as they previously damaged in two.If something cannot be done to change things,Alaska'forests will not survive the turn of century.