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Table 3 Mean DBH and height of oaks growing in cluster planting stands

From: Intra- and interspecific competition differently influence growth and stem quality of young oaks (Quercus robur L. and Quercus petraea (Mattuschka) Liebl.)

Site

DBH mean (cm)

S.E.

N

Height mean (m)

S.E.

N

Stand age (year)

Altenheim

      

10

 Inner oaks

5.11

0.17

133

6.68

0.09

133

 

 Peripheral oaks

5.69

0.13

225

6.99

0.07

225

 

 All (inner + peripheral oaks)

5.47

0.1

358

6.88

0.05

358

 

Kaisereiche

      

20

 Inner oaks

5.57

0.19

178

4.78

0.23

105

 

 Peripheral oaks

6.13

0.45

202

5.97

0.9

122

 

 All (inner + peripheral oaks)

5.87

0.26

380

5.42

0.5

227

 

Lerchenfeld

      

20

 Inner oaks

7.88

0.26

148

6.95

0.32

140

 

 Peripheral oaks

9.26

0.23

230

8.7

0.28

223

 

 All (inner + peripheral oaks)

8.72

0.18

378

8.02

0.22

363

 

Gerlingen

11.67

0.36

169

9.37

0.14

169

26

Gerchsheim

7.28

0.26

236

8.71

0.15

236

22

Königheim

6.58

0.18

472

8.05

0.13

472

22

Leonberg

7.01

0.14

460

8.34

0.08

460

23

  1. S.E. standard error, N number of oaks inventoried