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Table 2 Summary of observed characteristics of the species after removing incomplete records

From: Species-specific, pan-European diameter increment models based on data of 2.3 million trees

 

Reason for inclusion

Number of trees

Mean dbh (mm)

99th percentile DBH (mm)

Mean increment (mm∙yr− 1)

Mean basal area (m2∙ha− 1)

Mean mat (mean annual temperature) (degrees c)

Mat standard deviation

Mean tap (total annual precipitation) (mm∙yr− 1)

Tap standard deviation

Abies spp.

A

54,974

340

799

4.8

38.4

9.7

1.5

855

202

Larix spp.

A

24,508

332

700

3.9

31.5

8.9

2.5

871

287

other conifers

D

31,063

271

613

5.4

22.5

11.3

4.0

817

368

Picea abies

A

373,235

248

635

3.6

34.5

7.1

2.8

836

273

Picea sitchensis

B

8074

253

554

7.0

39.1

10.5

0.9

983

220

Pinus nigra + mugo

C

66,237

239

579

2.9

21.7

12.1

1.7

500

189

Other indigenous pines

C

204,443

268

580

4.0

20.5

13.6

2.4

563

305

Pinus sylvestris

A

529,184

237

531

2.9

28.7

8.5

2.8

641

152

Pseudotsuga menziesii

B

23,070

333

736

7.2

34.8

10.8

1.1

794

146

Betula spp.

A

149,484

145

414

1.8

21.4

5.9

3.6

752

220

longlived broadleaves

D

199,048

223

673

2.9

25.3

11.3

2.0

726

201

shortlived broadleaves

D

109,732

189

589

3.1

27.2

9.6

3.1

763

215

Castanea sativa

C

34,812

287

1114

3.9

31.5

12.4

1.6

832

227

Eucalyptus spp.

B

6770

273

678

7.9

18.7

15.2

1.3

1014

421

Fagus sylvatica

A

163,123

331

807

3.6

33.0

10.1

1.5

791

176

Populus plantations

B

2513

392

925

9.3

26.5

11.3

1.5

690

155

Quercus ilex

C

68,173

237

764

1.8

12.2

14.3

2.1

536

156

Quercus robur + petraea

A

179,861

335

827

3.3

28.7

10.9

1.6

778

204

Quercus suber

C

20,616

319

796

2.3

16.6

16.3

1.4

640

161

Robinia pseudoacacia

B

10,154

212

551

4.2

26.3

11.7

1.7

783

176

  1. Reason for inclusion of species group: A = more than 5% of total data coverage; B = important commercial species; C = important for regional coverage; D = rest group