> The growth rate of trees slows down over time. No, it is accelerating - according to this study in Nature [2]. "reviewed records from forest studies on six

> The growth rate of trees slows down over time. No, it is accelerating - according to this study in Nature [2]. "reviewed records from forest studies on six continents, involving 673,046 individual trees and more than 400 species...97% of the species surveyed, the mass growth rate—literally, the amount of tree in the tree—kept increasing even as the individual tree got older and taller" [1] "for most species mass growth rate increases continuously with tree size. Thus, large, old trees do not act simply as senescent carbon reservoirs but actively fix large amounts of carbon compared to smaller trees; at the extreme, a single big tree can add the same amount of carbon to the forest within a year as is contained in an entire mid-sized tree" [2] [1] http://science.time.com/2014/01/15/study-shows-older-trees-absorb-more-carbon/ http://science.time.com/2014/01/15/study-shows-older-trees-a... [2] https://www.nature.com/articles/nature12914 https://www.nature.com/articles/nature12914