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. 2016 Jun 6;6:26901. doi: 10.1038/srep26901

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Copyright © 2016, 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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Seasonal gross primary productivity (GPP) and soil water content (SWC) dynamics of the control and N-addition treatments in 2012 (a) and 2013 (b) in a temperate grassland in Inner Mongolia, China. The six selected precipitation events are indicated by arrows above the precipitation event bars. DOY: day of year; GPP_N: GPP of the N-addition treatment; GPP_CK: GPP of the control; GPP_Eddy: GPP derived from the eddy covariance system.