RT Journal Article
SR Electronic
T1 The effect of nutrient availability on global forest carbon balance is uncertain
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 012476
DO 10.1101/012476
A1 Enzai Du
YR 2015
UL http://biorxiv.org/content/early/2015/08/03/012476.abstract
AB To the Editor — Fernández-Martínez et al. 1 show a chief determinant of nutrient availability on net ecosystem production (NEP) and ecosystem carbon-use efficiency (CUEe, the ratio of NEP to gross primary production i.e. GPP) in global forests. However, their conclusions depend on an improper treatment of differences in the GPP range of nutrient-rich and nutrient-poor forests (uneven sampling effect) and outliers. A statistical re-analysis of their datasets, while simultaneously excluding the uneven sampling effect and outliers, indicates no significant control of nutrient availability on carbon (C) balance.