地球上只有40％的森林仍然完整，生態未受人類發展所破壞。這些森林主要分佈在亞馬遜、新幾內亞、加拿大、俄羅斯及非洲中部，但當中只有27%的森林屬受保護範圍。

Only 40% of world’s forests still have high ecological integrity without human damage. these forests mostly located in the Amazon, New Guniea, Canada, Russian and Central Africa, but only 27% of these forests are under national protection.