Mindless tree planting is surely useless, and may be harmful.
I remember the Great Gale in the south of England, Oct 1987 (you know, Michael Fish's 'there is no hurricane ?).
After it, a lot of tree planting went on; and, about 20 years later, areas that had NOT been planted had much more healthy woods then those that had.
And I also remember Oliver Rackham's scathing remarks about people 'planting trees in woods'. Much better to allow woods to regenerate naturally, surely ?
And of course, planting trees in peat bogs is ridiculous.
It is of course, especially as it's now such a scarce habitat but what I wondered was, wouldn't a peat bog be too acidic for most of our native trees?