diplomsko delo - visokošolski strokovni študij
Boštjan Gorišek (Avtor), Boštjan Košir (Mentor), Jurij Marenče (Komentor)

Povzetek

Diplomsko delo je sad številnih raziskav in meritev, ki so se izvajale v gozdno gospodarski enoti Poljane, v revirju Rampoha. Meritve so potekale jeseni (od avgusta do oktobra) leta 2009. Namen naloge je bil pridobiti čim več uporabnih informacij o smiselnosti strojne sečnje na skalovitem in po večini vrtačastem ter hribovitem terenu v starejših mešanih in pomlajenih sestojih. Pri raziskavi smo uporabili dva načina izvajanja sečnje. Klasični način sečnje je potekal z motorno žago Stihl MS 361 in Husqvarna 372 XP, strojno sečnjo pa smo opravili s strojem za strojno sečnjo John Deere 1470D ECO III. Oddelek smo z žrebom razdelili na stratume in dva od teh smo izbrali za opravljanje meritev. V stratumu A 2 smo izvajali kombinacijo sečnje z motorno žago ter s strojem za strojno sečnjo. V stratumu B 1 pa smo z opravili meritve s klasično sečnjo z motorno žago. Revirni gozdar je pred začetkom del opravil odkazilo dreves, pred sečnjo pa smo vsa drevesa oštevilčili. Analiza delovnega časa je pokazala, da imamo pri izdelovanju dreves na klasičen način z motorno žago visok delež produktivnega časa % ta je znašal 71,22 %, pri kombinaciji tehnologij pa 57,65 %. Majhen delež je pri meritvi produktivnega časa dosegla strojna sečnja (56,4 %). Na tako tipičnem terenu in pri pomladitveni sečnji se je klasična sečnja z motorno žago po produktivnem času izkazala najbolje, v učinku pa je dominiral posek dreves s strojno sečnjo. Ugotovili smo, da je pri manjših premerih delež delovnega časa v prid strojni sečnji, pri velikih premerih pa je ta razlika nekoliko manjša.

Ključne besede

sečnja lesa;motorne žage;delavni čas;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL BF - Biotehniška fakulteta
Založnik: [B. Gorišek]
UDK: 630*3(043.2)=163.6
COBISS: 4549798 Povezava se bo odprla v novem oknu
Št. ogledov: 445
Št. prenosov: 113
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: ǂA ǂcomparison of two tree-felling technologies in the rejuvenated stands of fir-beech growth in the region of the Novo Mesto Rog
Sekundarni povzetek: This thesis is the result of extensive research and numerous measurements carried out by the Gozdno Gospodarska Enota (Forest Service Unit) of Poljane in the district of Rampoha. The measurements were taken in the Fall of 2009, from August through October. The aim of this work was to obtain as much useful information as possible on the suitabiliy of mechanized tree-felling methods on a rocky and mostly hilly terrain strewn with sinkholes, both in older mixed and in rejuvenated forest stands. Our research was done by using two methods of tree-felling. The classical method made use of chain saws, using the models Stihl MS 361 and Husqvarna 372 XP, whereas the mechanized tree-felling was done by using the harvester John Deere 1470D ECO III. The division was parceled out into strata by drawing lots; two of the strata were chosen for measurements. Stratum A 2 was treated using combined tree-felling by chain saw and harvester, while Stratum B 1 was treated using the classical tree-felling method. Before the tree-felling started the district forest manager marked the trees to be felled; all the trees were numbered. Once all the necessary measurements and calculations had been done we analyzed the data in terms of work hours and their productivity. The classical chain saw felling method turned out to have the highest work hour productivity rate of 71.22 %, whereas the rate for the combined technologies approach was 57.65 %, and the lowest rate of 56.4 % was achieved by mechanized tree-felling. Therefore, the classical felling method turned out the best performance on such typical terrain and rejuvenated tracts, although mechanized tree-felling came out ahead in terms of work hours per volume (min per m3). We found mechanized tree-felling to have the advantage for small diameter trees, while the advantage diminished for larger diameter trees, all in terms of work hours per volume.
Vrsta dela (COBISS): Diplomsko delo/naloga
Komentar na gradivo: Univ. v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire
Strani: VII, 57 str.
ID: 11476511