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ŠUMARSKI LIST 11-12/2009 str. 32     <-- 32 -->        PDF

S.Andrašev, M. Bobinac, S. Orlović: DIAMETER STRUCTURE MODELS OF BLACK POPLAR SELECTED ... Šumarski list br. 11–12, CXXXIII (2009), 589-603


Test results of the analysis of variance of repeated
measurements showed a high (G) and very high (dg) significant
interactions clone×year which indicates that
the investigated clones had different increments of the
quadratic mean diameterand total basal area per hectare
in the study period (Table 4, Diagram 1).


Throughout the period of 20 years, the clone PE
19/66 attained the best results both in stand quadratic
mean diameter (dg), and in total basal area per hectare


(G) and it is differentiated from the other clones by
LSD test at the 5%risk level.


Clone Pannonia attained the lowest sizes of the


stand quadratic mean diameter and the total basal area


per hectare in the period to the eighth year. In further
development, its increment was more intensive compared
to other clones and at the age of 20 years, its mean
diameter and total basal area per hectare were greater


compared to the clones S , NS and S .


6-7 1-3 6-36


The growth of clone NS was also more intensive


11-8


with the increased age.


Table 4
Test results of the analysis of variance of repeated measurements ofthe quadratic mean diameter
and total basal area per hectare.


Tablica 4.Rezultati testa analize varijance ponovljenih mjerenja srednjeg promjera po temeljnici i ukupne
temeljnice po hektaru.


Sum of Square Degr. of Freed. Mean Square F p
Stand quadratic mean diameter - d
g
[cm]– Srednji promjer po temeljnici - dg[cm]
Intercept 77431.36 1 77431.36 17478.1 0
Clone 147.31 5 29.46 6.65 0.00114
Error 79.74 18 4.43
Year 23945.81 6 3990.97 8612.37 0
Clone ×Year 120.13 30 4.00 8.64 0
Error 50.05 108 0.46
Basal area per hectare – G [m
2
·ha
-1
]– Temeljnica po hektaru – G [m2·ha-1]
Intercept 50759.86 1 50759.86 1461.36 0
Clone 134.79 5 26.96 0.77614 0.57951
Error 625.22 18 34.73
Year 30971.14 6 5161.86 1267.97 0
Clone ×Year 240.87 30 8.03 1.97228 0.00602
Error 439.66 108 4.07


4.2. Diameter structure models obtained by the weibull distribution


Modeli debljinske strukture dobiveni weibull-ovom distribucijom


4.2.1. Location parameters (a) of the Weibull diameter structure model


Definiranje parametara položaja (a) modela Weibull-ove debljinske strukture


Table 5 presents the percentile minimum diameter son-Darling statistics of studied clones in certain years of
with a minimum value of Anderson-Darling statistics surveying. Diagram 2 shows the percentage of the per


2


(A), and mean values and standard deviations ofAnder-centiles of minimal diameter for the definition of location


2


Table 5
Percentile values of the minimum diameter (%d ) that have the least value ofAnderson-Darling (A) statistic of


min


examined clones by years of survey.


Tablica 5.Vrijednost percentila minimalnog promjera (%dmin) koji imaju najmanju vrijednost Anderson-Darling statistikue
(A2) istraživanih klonova po godinama izmjere.


Clone
Klon
%d
min
A
2 1
Age of the plantation after planting
Starost nasada nakon sadnje
Age of the plantation after planting
Starost nasada nakon sadnje
1. 2. 5. 8. 12. 17. 20. 1. 2. 5. 8. 12. 17. 20.
S
6-36
0.85 0.90 0.85 0.85 0.90 0.90 0.90 0.33(0,15)
2
0.60 (0,06)0.66 (0,21) 0.67 (0,12) 0.49 (0,29) 0.28 (0,10) 0.31 (0,16)
NS
1.3
0.90 0.90 0.85 0.75 0.65 0.65 0.55 0.36 (0,17) 0.26 (0,03)0.71 (0,26) 0.46 (0,23) 0.59 (0,21) 0.37 (0,17) 0.51 (0,39)
NS
11-8
0.60 0.55 0.75 0.80 0.80 0.85 0.85 0.71 (0,25) 0.43 (0,27)0.51 (0,10) 0.46 (0,11) 0.43 (0,19) 0.45 (0,10) 0.38 (0,04)
Pannonia 0.10 0.45 0.70 0.85 0.90 0.80 0.75 0.56 (0,28) 0.50 (0,26)0.43 (0,14) 0.56 (0,27) 0.59 (0,31) 0.20 (0,03) 0.21 (0,03)
PE19/66 0.80 0.70 0.90 0.90 0.90 0.70 0.60 0.23 (0,06) 0.36 (0,04)0.60 (0,21) 0.39 (0,27) 0.36 (0,13) 0.36 (0,09) 0.28 (0,08)
S
6-7
0.45 0,70 0.95 0.80 0.75 0.60 0.60 0.23 (0,06) 0.29 (0,01) 0.55 (0,11) 0.57 (0,29) 0.55 (0,37) 0.55 (0,41) 0.40 (0,24)


1


mean values ofAnderson-Darling statistic– srednje vrijednosti Anderson-Darling statistike.


2


Values in parentheses represent the standard deviation –Vrijednosti u zagradi predstavljaju standardnu devijaciju.
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