Variable or covariate | Acronym | Units | Min | Max | Mean | SD |
Stand variables |
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Age | A | yr | 2.4 | 54.8 | 20.7 | 7.7 |
Yield | Y | (m3∙ha−1) | 0.2 | 842.5 | 305.1 | 155.2 |
Density | N | trees∙ha−1 | 320 | 2040 | 912 | 379 |
Climate covariates |
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Annual mean temperature | Amt | ˚C | 13.9 | 20.4 | 17.5 | 1.0 |
Annual mean precipitation | Amp | mm∙yr−1 | 1631 | 4176 | 2508 | 681.2 |
Temperature to precipitation ratio | TP | 100 ˚C∙mm−1 | 0.44 | 1.09 | 0.74 | 0.18 |
Hottest month’s temperature | Hmt | ˚C | 18.7 | 26.0 | 23.1 | 1.0 |
Coolest month’s temperature | Cmt | ˚C | 9.0 | 14.0 | 11.5 | 1.1 |
Hottest quarter’s temperature | Hqt | ˚C | 15.3 | 21.3 | 18.0 | 1.1 |
Coolest quarter’s temperature | Cqt | ˚C | 13.5 | 19.7 | 16.9 | 1.1 |
Moister month’s precipitation | Mmp | mm∙mo−1 | 222 | 453 | 312.9 | 73.1 |
Driest month’s precipitation | Dmp | mm∙mo−1 | 45 | 169 | 72.4 | 31.8 |
Moister quarter’s precipitation | Mqp | mm∙Qrt−1 | 568 | 1328 | 858.1 | 225.7 |
Driest quarter’s precipitation | Dqp | mm∙Qtr−1 | 186 | 538 | 271.2 | 89.7 |
Topographic covariates |
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Slope | S | Degree | 0 | 54.9 | 14.7 | 6.6 |
Elevation | E | m.a.s.l. | 1693 | 2693 | 2216 | 210 |
Soil covariates |
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| Level 1 | Level 2 | ||
pH (4.1 - 5; 5.1 - 6) | pH | Count | 462 | 657 | ||
Drainage (W: well; E: excessive) | D | Count | 1034 | 85 | ||
Depth (M; moderate; D: deep) | Dp | Count | 182 | 937 | ||
Fertility (V: very low; L: low) | F | Count | 64 | 1055 |