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. 2015 Dec 15;5:18254. doi: 10.1038/srep18254

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Copyright © 2015, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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The relationships between the LUE (light use efficiency, μmol CO₂ μmol Photons⁻¹) and NUE (nitrogen use efficiency, μmol CO₂ mol N⁻¹) (a) or the NUE and iWUE (water use efficiency, μmol CO₂ mmol H₂O⁻¹) (b) in the control and drought plots. Ss and Pm represent Schima superba and Pinus massoniana, respectively. The dotted line indicates the linear regression for the control plots.