A lot of times at a local level these no-net-loss guidelines and actually putting a value on natural capital can work.
The tree removal guideline is a relatively simple formula. We know what it costs to plant a tree and, depending on the size of the tree that has to be removed, that can multiply the number of trees that you have to replace.
If somebody is going to do damage to a park, we look at what it would cost to repair in terms of planting all that biodiversity again and come up with a value that will make the high-quality natural areas almost astronomical in value.