How is spruce forest restored after its complete deforestation?

1) spruce – a shade-tolerant plant, so the first year of felling will be settled by photophilous, rapidly growing grasses, shrubs and trees;
2) under the canopy of the undergrowth of photophilous trees, spruce seedlings will develop well. A teenager protects them from an excess of sunlight and spring frosts.
3) young spruce trees successfully compete with photophilous trees, and when they reach the upper tier they displace them.