Figure 3
The difference of average phenodate every degree of soil CO2 concentration in C. korshinskii from March 2011 to October 2013 (the vertical axis of the graph represents the advanced or postponed days of plant phenology, which it was an integer value as 1, 2, 3 …, the dotted line was plant growing in the natural conditions, the upward means the plant phenology was advanced, and conversely the downwards means plant phenology was postponed. The horizontal axis represents the different CO2 concentration gradient).