Fig. 6
From: Heat and drought impact on carbon exchange in an age-sequence of temperate pine forests
Daily sensitivities of carbon fluxes to air temperature (Ta) and dryness represented by relative extractable water (REW) anomalies. Curves show the mean sensitivity in the 15 day moving windows. Data were detrended and normalized to remove forest growth and long-term climate variability impacts. When the flux vs climate variable correlation for 15 day moving averages was significant (p < 0.05), the slope of the regression showed the effect of climate constraints on the carbon fluxes (following Schwalm et al. 2010; Wu and Chen 2013)