We don't specify a minimum number of species but the predominant species cannot exceed 75% then you need minimum 10% open ground, 10% other species (can be another conifer) and 5% native shrubs or broadleaf.Yes quite correct in that Japan was the original destination for much of the radiata, and framing timber from the best of it and the douglas fir.
Interesting what you say about the monoculture issue being addressed in legislation already, whats the minimum number of species needed to be planted together in order to be allowed?
You will not be allowed to exceed these figures and may well be subject to site restrictions i.e. you need to comply with separate water and forest guidelines so if you have a watercourse on the site you will not be allowed to plant close up to it.
Max coupe for harvesting is 50 Ha and then you need to get new crop to 2m before felling next coupe along.