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Forest Ecosystems

Table 4 Regression parameters and level of significance for the smoothers for selected increment parameters 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

 

i v

i cv

 

Est.

Std. E.

p

Est.

Std. E.

P

β 0

−0.00001

0.000002

***

−0.002

0.001

 

β 1(651)

0.00002

0.000003

***

–

  

β 2(653)

0.00001

0.000003

***

–

  

β 3(v)

−0.87

0.006

***

533.86

30.36

***

f 1(DCI, 650)

  

***

   

f 2(DCI, 651)

  

*

  

*

f 3(DCI, 653)

  

***

  

***

g(E, N)

     

***

  1. . p-value < 0.1, * p-value < 0.05, ** p-value < 0.01, *** p-value < 0.001, v was used as trial overarching linear effect. Non-linearity and trial separated usage showed no significance
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