Abstract
The boreal forest (N 45 *70 degrees) occupies about 1/3 of the total world forest area. It is assumed that the boreal forest is most sensitive to global climate change such as global warming. We are conducting a molecular, physiological, biochemical and ecological study on the mechanisms of boreal forest regeneration. The characteristics of the cryosphere where the boreal forest exists are low precipitation and low temperature. We assume that photooxidative stress plays a key role in forest regeneration under such environmental conditions. For example, we have found that the gap regeneration that occurs in tropical or temperate forests does not occur in boreal forests, that is, seedlings can survive under the canopy of adult trees but not in gaps in boreal forests. I will be talking about the mechanisms of how photooxidative stress affects forest regeneration.
