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COST Action E 52 - vTI - Bund.de

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Fig. 5. Scheme of structure at height of beech group (according to GIGAURI 1980)<br />

During the life of one generation (500 – 600 years) beech forest will pass the main biological stages<br />

of <strong>de</strong>velopment:<br />

1. Teenage stage (age 40 – 60);<br />

2. Development stage of young forest (age 41 – 100);<br />

3. Development stage of the middle and matured parts of the group (101 – 160);<br />

4. Maturity stage of the group (age from 161 to 240 – 250). Trees reach large size;<br />

5. Stage when trees of the upper part of the canopy get old and when they begin to die gradually (age<br />

from 250 to 350 – 360);<br />

6. Primary stage of dying of the earlier generation or natural maturity of the forest (from 360 to 500<br />

– 600 – 800).<br />

The main principles of forest management in various categories of forests in Georgia are:<br />

In protection forests, national parks and on protected areas of various categories the regime of<br />

forestry is <strong>de</strong>termined by preservation, protection and improvement of the entire complex of natural<br />

conditions (today 14 state reserves, 8 national parks, 12 game reserves, 14 natural monuments and 2<br />

protected landscape function in Georgia) (web-site: http://dpa.gov.ge/).<br />

In green zone forests, the forestry management aims at the formation of valuable forest stands<br />

– healthy, high productive and of aesthetical valuable that will promote improvement of sanitary<br />

hygienic conditions of the urban-industrial environment and secure the remain<strong>de</strong>r of the population<br />

and a<strong>de</strong>quately protect their health status.<br />

In the forests of such importance, the main regulations of forestry are <strong>de</strong>termined by improvement<br />

of sanitary, hygienic and aesthetical conditions of the forests.<br />

In the mountain forests the protection of soil and water through regulation are important functions<br />

and here the purpose of forestry is the conservation and strengthening of soil protection, water<br />

preservation and other water control functions. Here, the main function is to avoid erosion and<br />

protect the permanent health status of rivers and streams. Besi<strong>de</strong>s protective and other functions<br />

but due to their high productivity, these forests also have a function of timber production. These<br />

protective and exploitation functions of the forests supplement each other. However, forest<br />

exploitation requirements are always subordinate to the protective functions of forests (Cutting Rules<br />

in Georgian Forests, 2000).<br />

10

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