Zbornik gozdarstva in lesarstva 70, s. 101 - 118
GDK  3+308:(083.9)
Prispelo / Received: 25.01.2003 Izvirni znanstveni članek
Sprejeto / Accepted: 20.05.2003 Original scientific paper
MODELNA NAPOVED TRENDOV LESNIH ZALOG V
ODVISNOSTI OD JAKOSTI REDČENJ IN PROIZVODNE DOBE
Janez KRČ* Boštjan KOŠIR*
Izvleček
Za različne ravni velikosti gozdne posesti smo napovedali različice razvoja gozdnih sestojev. V ta namen smo
razvili računalniški algoritem, ki posnema razvoj gozdnih sestojev. Z njim smo izračunali prihodnja stanja
lesnih zalog po gozdnih odsekih. Gozdni odseki so najvišja raven podrobnosti vhodnih podatkov, ki smo jih
pridobili iz računalniške zbirke podatkov popisa gozdov. Simulacija gospodarskih ukrepov je določena s ciljno
funkcijo približevanja rastišču primernih struktur lesnih zalog po drevesnih vrstah. Različice scenarijev smo
ločili po intenziteti redčenj in dolžini proizvodnih dob. Boljši so scenariji, ki zagotovijo čim bolj rastišču
primerne strukture sestojev. Model smo preizkusili na primeru gozdnogospodarske enote Jezersko.
Ključne besede: pridelava lesa, načrtovanje, ekološki vidik, napoved, računalniška
simulacija, razvoj gozdnega sestoja, model
A COMPUTER MODEL FOR EVALUATION OF CUTTING VOLUMES
REGARDING FUTURE FOREST STAND DEVELOPMENT
Abstract
A prediction of future development for different sizes of forest properties and time scales was made as well as a
computer algorithm for the simulation of future forest stand development. With the aid of the algorithm, we
calculated the future situation of growing stock for a basic simulation unit of a forest section. The forest section
was at the same time the smallest unit of input data, mostly taken from national forest inventory data. The
management scenario simulation was controlled by the target function. The target function determined the
difference between actual and model optimal growing stock by tree species. Scenarios were defined by thinning
intensities and length of rotation period. Different scenario results were analyzed with respect to ecological
aspects regarding the forest site demands. Models were tested in the Jezersko forest management unit.
Key words: wood production, planning, ecological view, target situation, computer
simulation, forest stand development, model
                                           
* Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire,Večna pot 83, 1000 Ljubljana, SVN
102
Zbornik gozdarstva in lesarstva, 70
VSEBINA
CONTENTS
1 UVOD
INTRODUCTION..........................................................................103
2 METODA DELA
WORKING METHODS.................................................................105
3 REZULTAT
RESULT .........................................................................................110
4 SUMMARY ...................................................................................116
5 VIRI
REFERENCES ...............................................................................117