it estimates that intact, old-growth forests sequestered 950 million to 1.11 billion metric tons of carbon per year while younger forests – those that have been growing less than 140 years – stored between 1.17 and 1.66 billion metric tons per year. The study also estimates that the world’s regenerating forests stand to uptake a further 50 billion metric tons of carbon as they grow. These findings upend conventional wisdom that old-growth tropical rainforests are the planet’s biggest carbon sinks.
— source news.mongabay.com | 26 Feb 2019