Net photosynthetic rate (Pn), stomatal conductance (Gs) and relative coverage (mean ± SE) of Leymus chinensis and Phragmites australis measured in June of 2006, 2007, 2008 and 2009.
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Measurements were performed on the upper most fully expanded leaves from 9.00 to 11.00 a.m. Different letters indicate significant differences (P
创建时间：
2015-12-02
