If it's on private property, I can still understand because it's market orientation...
But if it's on public land, local government should be blamed for the poor and careless planning...
The thing is, local governments know how disastrous the tree planting is, and officially, they have repeatedly indicated that they will either stop doing this or start cracking down on it. But the practices continues.
I don't remember whether the local governments were just turning a blind eye to it, or whether it was just the same as everything else in China -- you make all these grand announcements and perhaps have a major crackdown operation for a while (a month, 3 months, whatever), and then it's back to business as usual.