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Joint International Conference on Long-term Experiments ...

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Another possible simulated break in the stand from the a.u. 78C is the <strong>on</strong>e in which<br />

acti<strong>on</strong> is taken up<strong>on</strong> the trees from the inferior diameter category, as well as up<strong>on</strong> the<br />

trees from the medium and superior diameter categories. Thus, the obtained data is<br />

shown as follows:<br />

Table no. 4 The calculati<strong>on</strong> of the medium diameter, dispersi<strong>on</strong> and distributi<strong>on</strong><br />

form indicators, case 2<br />

Calculated characteristics Before break After break<br />

Medium diameter(cm) 22,04188482 21,338583<br />

Variance 67,44612783 50,105542<br />

Standard – Deviati<strong>on</strong> 8,212559152 7,0785268<br />

Variati<strong>on</strong> Factor 0,372588788 0,3317243<br />

Asimetry -0,142394868 0,1765171<br />

Excess 1,89798843 2,2001468<br />

Table no. 5 Species proporti<strong>on</strong> case 2<br />

Basic area proporti<strong>on</strong> Volume proporti<strong>on</strong> Tree number<br />

Species<br />

Before After Before After<br />

proporti<strong>on</strong><br />

Before After<br />

break break break break break break<br />

FA 33,60 33,26 35,88 35,15 27,96 35,43<br />

GO 42,29 43,40 44,43 45,70 26,88 29,92<br />

CA 20,51 20,46 16,08 16,23 43,01 33,07<br />

ST 3,60 2,88 3,62 2,92 2,15 1,57<br />

CE 0,00 0,00 0,00 0,00 0,00 0,00<br />

CI 9,95 0,00 8,43 0,00 2,69 0,00<br />

Table no. 6 The calculati<strong>on</strong> of the break intensity and of Hart-Becking index case 2<br />

Calculated characteristics Values<br />

Tree number intensity 31,72043011<br />

Basic area intensity 36,4963218<br />

Volume intensity 36,99021667<br />

Spacing factor ( Hart-Becking index)<br />

Before break<br />

14,273994<br />

After break<br />

17,274286<br />

In this simulated break it can be noticed that the medium diameter does not grow<br />

artificially, as seen in the first case, which emphasizes that by breaking in all diameter<br />

categories, the medium diameter of the stand remains aproximately c<strong>on</strong>sistent. Further<br />

more, in this case, the diffferences related to tree number, basic area and volume<br />

intensities are not too big.<br />

505

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