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Official Journal of the Japan Wood Research Society

Table 3 Spearman rank correlation coefficients between number of mean cell layers and climatic factors

From: Annual wood formation of tropical pioneer species related to stem diameters

Trees

Macaranga gigantea

Endospermum diadenum

Smaller stem

Larger stem

Smaller stem

Larger stem

CC

EC

CC

EC

CC

EC

CC

EC

Total rainfall (mm)

− 0.433

− 0.007

− 0.085

− 0.113

− 0.011

− 0.076

− 0.429

− 0.233

Minimum temperature (°C)

− 0.556

− 0.634a

− 0.062

− 0.176

− 0.408

− 0.338

− 0.148

− 0.345

Mean temperature (°C)

− 0.520

− 0.695a

− 0.160

− 0.209

− 0.619a

− 0.515

− 0.285

− 0.455

Maximum temperature (°C)

− 0.713a

− 0.675a

− 0.375

− 0.502

− 0.531

− 0.553

− 0.560

− 0.505

Mean relative humidity (%)

− 0.215

0.180

0.078

− 0.048

0.350

0.150

− 0.276

− 0.217

Mean vapor pressure deficit (hPa)

0.047

− 0.346

− 0.004

0.026

− 0.387

− 0.216

0.278

0.120

Day length (Hour)

− 0.112

− 0.236

− 0.185

− 0.183

− 0.136

0.032

0.039

− 0.169

  1. CC: Mean number of cambial cell layers
  2. EC: Mean number of enlarging cell layers
  3. aCorrelation is significant at the 0.05 level
  4. bCorrelation is significant at the 0.01 level