Lets not confuse what was written (copy & pasted) from an email and anything else.
Whether you consider it "real" AI or not does not come into play....
I found no reference but from reading other information I deduced that's what they meant, I could be incorrect, though it makes sense.
Mnay of these...
Unit area is leaf amd root area, the areas where the carbon is absorbed.
It's a unique way of saying grass is a better carbon sink than trees, a bit...