Fig. 4 Relationships among plant biomass, plant growth, and
phenology. Blue lines represent the significant positive correlations,
red lines represent the significant negative correlations, blue boxes
represent significantly increased trends over time, red lines represent
significantly decreased trends over time, the dashed line represents
non-significant correlations, the dashed boxes represent non-significant
trends over time. The number in the middle of the line represents
Pearson’s
correlation
coefficient and optimal daylength threshold.