Table 2 Correlation coefficients between photosynthetic parameters of large old Z. serrata and climatic environmental factors during July (summer) and September (fall).

From: Photosynthetic responses of large old Zelkova serrata (Thunb.) Makino trees to different growth environments

  1. PAR photosynthetically active radiation, Tair air temperature, Tleaf leaf temperature, VPD vapor pressure deficit, RH relative humidity, Ci intercellular CO2, CO2 ambient CO2 during July (summer) (gray) and September (fall) (white).
  2. *p < 0.05, **p < 0.01.
  3. Significant values are in bold.
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