If you do the forestry right you create many plots in there and aim to cut down e.g. 2% in a given year. That mean you will get the whole forest replaced in 50

If you do the forestry right you create many plots in there and aim to cut down e.g. 2% in a given year. That mean you will get the whole forest replaced in 50 years. If you're careful to not cut too much in a single space then the animals and plants can move around and it should be ok for biodiversity. Now for the energetic biomass - this is more like 5-10 year rotation so while the animals can move around the plants can't. Those will be mono-cultures to sustain energy demand until we have enough of some other energy sources.