I like your idea of grow 50 trees for every new born (I am not ambitious enough with my 'tree of life') and as many trees as the age of dead people. I will put that in my will!
For many who do not have 'land' to grow trees. can run a campaign to open 'public areas for tree growing? These areas will be protected 'public space' (like public parks and public forests) for benefits and enjoyment of people.
What say you?