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. 2017 Dec 7;8:2088. doi: 10.3389/fpls.2017.02088

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Copyright © 2017 Liu, Taxipulati, Gong, Sui, Wang, Parent, Hu, Guan and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Foliar element concentrations of different plant groups under different nutrient supply regimes in the first (2014) and second (2015) growing season after fertilization. (A,B) Foliar carbon concentration (FCC, g kg^-1); (C,D) foliar nitrogen concentration (FNC, g kg^-1); (E,F) foliar phosphorous concentration (FPC, g kg^-1). G, graminoids; F, forbs; P.K., P. kansuensis. Data are presented as means ± SE of four replicates. Bars with different letters indicate significant difference at P < 0.05 level. Fertilization regimes: CK, non-fertilized control; LN, fertilized with lower nitrogen level; HN, fertilized with higher nitrogen level; P, fertilized with phosphorus.