Razvoj gozdov v gozdnogospodarski enoti Čemernica

magistrsko delo

Vasilije Trifković (Avtor), Andrej Bončina (Mentor)

Povzetek

Na podlagi arhivskih podatkov iz gozdnogospodarskih načrtov smo analizirali razvoj gozdnih sestojev v gozdnogospodarski enoti Čemernica (Bosna in Hercegovina). Uporabili smo podatke iz načrtov za pet načrtovalnih obdobjih z začetkom veljavnosti v letih 1964, 1979, 1987, 1999 in 2008. Na ravni oddelkov smo analizirali spremembe lesne zaloge, drevesne sestave in debelinske strukture gozdnih sestojev. Gospodarjenje z čemerniškimi gozdovi se izvaja pretežno po načelih prebiralnega gospodarjenja. Spremembe drevesne sestave in debelinske strukture smo pojasnjevali s topografskimi spremenljivkami (nadmorska višina, naklon in ekspozicija) in spremenljivkami dostopnosti (gostota gozdnih cest, razdalja od centroida oddelka do najbližjega naselja in razdalja od centroida oddelka do najbližje ceste). V obdobju 1964-2008 se je lesna zaloga gozdnih sestojev povečala, in sicer od 311 m3/ha na 395 m3/ha. Drevesna sestava se je spremenila, delež bukve v lesni zalogi se je nekoliko zmanjšal zaradi povečanja deleža jelke, smreke in plemenitih listavcev. Debelinska struktura gozdnih sestojev se je značilno spremenila, povečala se je zaloga srednje debelega drevja s prsnim premerom 21-50 cm, zmanjšala pa zaloga debelega drevja s prsnim premerom nad 80 cm. Analiza razmestitve spremenjenih in ohranjenih gozdov kaže, da se z oddaljenostjo od naselij povečuje verjetnost za prisotnost ohranjenih gozdov. Podrobna analiza drevesne sestave gozdov kaže, da na njeno ohranjenost značilno vplivata naklon in oddaljenost od gozdnih cest; drevesna sestava je bolje ohranjena na terenih z večjimi nakloni in oddelkih, ki so bližje gozdnim cestam. Med dvema obdobjema (1964-1987 in 1987-2008) nismo ugotovili značilnih razlik v spremembah debelinske strukture, kar nakazuje, da se gospodarjenje z gozdovi ni bistveno spremenilo.

Ključne besede

razvoj gozdnih sestojev;lesna zaloga;drevesna sestava;debelinska struktura;gozdnogospodarski načrti;Čemernica;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2017
Tipologija:	2.09 - Magistrsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[V. Trifković]
UDK:	63062:63022:630*90(497.6Čemernica)(043.2)=163.6
COBISS:	4872614
Št. ogledov:	1801
Št. prenosov:	621
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Forest development in the Čemernica forest management unit
Sekundarni povzetek:	Based on archival data from the old forest management plans, we analyzed the development of forest stands in the Čemernica (Bosnia and Herzegovina) forest management unit. We used data from forest inventories carried in the years 1964, 1979, 1987, 1999 and 2008. Selection system has been the main silvicultural system applied in the Čemernica forest management unit. At the level of compartments (n = 59), we analyzed the changes of growing stock, tree species composition and diameter stucture of forest stands. The changes of tree species composition and diameter structure were modeled with the topographical variables (altitude, slope and exposition) and the variables of accessibility (density of forest roads, distance to the nearest settlement and distance to the nearest road). In the period 1964-2008, the growing stock increased from 311 m3/ha to 395 m3/ha. Tree species composition changed; the share of beech in growing stock slightly decreased, while the proportion of silver fir, Norway spruce and valuable deciduous trees increased. The diameter structure of the forest stands changed significantly, the growing stock of medium-sized trees with a diameter at breast height (dbh) of 21-50 cm increased, while the growing stock of large size diameter trees with dbh over 80 cm decreased. An analysis of the distribution of the natural forests and altered forests indicated that the likelihood for the presence of natural forests increased with the larger distance to settlements. A detailed analysis of tree species composition shows that naturlaness of tree species composition depends significantly on the slope of terrain and the distance to forest roads; tree species composition of forest stands is more natural in compartments on steeper slopes and closer to forest roads. Between the two periods (1964-1987 and 1987-2008), we did not find significant differences in the changes of diameter structure of forest stands, which indicates that the harvesting regime has not changed significantly in the observed period.
Sekundarne ključne besede:	development of forest stands;growing stock;tree species composition;diameter structure;forest management plan;Čemernica;
Vrsta dela (COBISS):	Magistrsko delo/naloga
Študijski program:	0
Konec prepovedi (OpenAIRE):	1970-01-01
Komentar na gradivo:	Univ. Ljubljana, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Strani:	IX f., 59 f., [3] f. pril.
ID:	10910416