> Forests in semi-desertic and temperate/dry climates naturally burn frequently.
Yep, and they are very important for biodiversity, but those aren't:
1) Most of the forests in the planet (If I'm not wrong, mature forests occupy more area still, 11% of the emerged areas is taiga).
2) neither mature forests (in the sense of "close to ecosystem climax"). They are either transitional (If let alone, they evolve to the next step that is a higher state of complexity) or trapped in a fire loop.
3) Fire loop that is not natural. We can't claim that something is naturally burn when in a 90% of the cases the culprit is the man.
Therefore claiming that "most of the forests need to be burnt regularly as good management practices" is not correct.