[thinkingemote]

Planting trees is easy. Trees grow from seed. My back yard can have a million trees. What counts is how many survive and what they are used for. Are the trees sustainable or do we just care about the equivalent of lines of code?

Many trees are planted to be used as bio fuel. More are planted to be converted to paper and pulp, others for construction.

All forestry involves thinning weaker trees from the forest. Planting trees shouldn't be what's measured at all but areas of sustainable forest created.