Carbon cycle — flux through a temperate forest
One year of carbon in a mature temperate stand, with every flux in g C m⁻² yr⁻¹ and the budget closing: gross primary production of 1500, half of it respired straight back by the trees, 550 respired by soil decomposers, and the 200 left over as net ecosystem production — the number that decides whether the stand is a sink.
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