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Table 8 Regression parameters and level of significance for the smoothers for growth efficiencies according to eq. 5

From: Analysing the effect of stand density and site conditions on structure and growth of oak species using Nelder trials along an environmental gradient: experimental design, evaluation methods, and results

 

\( ef{f}_{i_h} \)

\( ef{f}_{i_d} \)

\( ef{f}_{i_v} \)

\( ef{f}_{i_{cl}} \)

\( ef{f}_{i_{csa}} \)

\( ef{f}_{i_{cv}} \)

 

Est.

Std. E.

p

Est.

Std. E.

p

Est.

Std. E.

p

Est.

Std. E.

p

Est.

Std. E.

p

Est.

Std. E.

p

β 0

76.26

2.20

***

10.20

1.36

***

0.0001

0.000007

***

48.26

7.15

***

0.08

0.03

*

0.10

0.008

***

β 0(651)

 

−2.39

2.10

 

 

−2.29

11.16

 

−0.02

0.05

 

 

β 0(653)

 

14.40

2.03

***

 

35.41

10.77

**

0.12

0.05

*

 

f 1(vol, 650)

  

***

  

***

  

*

  

***

  

*

  

.

f 1(vol, 651)

  

***

  

***

  

***

  

**

  

***

  

***

f 1(vol, 653)

  

*

  

***

  

*

  

***

  

***

  

***

f 2(DCI, 650)

  

***

  

***

  

***

  

***

  

***

  

***

f 2(DCI, 651)

  

***

  

***

  

***

  

***

  

***

  

***

f 2(DCI, 653)

  

***

  

***

  

***

  

***

  

***

  

***

g(E, N)

  

***

     

.

  

*

     

***

  1. . p-value < 0.1, * p-value < 0.05, ** p-value < 0.01, *** p-value < 0.001