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Official Journal of the Japan Wood Research Society

Table 1 Spearman rank correlation coeffcients between tree monthly mean diameter increment and climatic factors

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

Climatic factors

Macaranga gigantea

Endospermum diadenum

Smaller stem

Larger stem

Smaller stem

Larger stem

Total rainfall (mm)

0.288

− 0.108

− 0.071

− 0.317

Minimum temperature (°C)

− 0.488

0.455

0.102

− 0.577a

Mean temperature (°C)

− 0.467

0.518

0.214

− 0.349

Maximum temperature (°C)

− 0.432

0.508

− 0.216

− 0.722b

Mean relative humidity (%)

0.123

− 0.108

− 0.250

− 0.399

Mean vapor pressure deficit (hPa)

− 0.351

0.173

0.218

0.217

Day length (hour)

− 0.309

0.00

0.175

− 0.384

  1. aCorrelation is significant at the 0.05 level
  2. bCorrelation is significant at the 0.01 level