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Harvest scheduling and operational planning for mountainous areas: a case study for Ikisu planning unit ; Planiranje sječe i operativno planiranje za planinska područja: studija slučaja planske jedinice Ikisu
Harvest scheduling has emerged as time consuming and difficult activity especially when includes operation plans in the absence of decision support systems. In this study, the level of allowable cut and timber extraction system for every stand was determined for spruce management unit of a mountainous İkisu planning unit in Turkey using linear programming model designed for 50 year planning horizon. First, different considerations such as maximization of timber cut with non-exceeding more than a certain distance between the centroids of compartments and the nearest forest roads were taken into account in determining the level of harvest. Approximately 68,728 m3 annual allowable cut was determined for the first period of planning horizon. Then, six different timber extraction systems were incorporated during the designation of timber extraction method for the first 10 year period of the planning horizon. These are man power, animal power, skidder, small size cable crane, medium size cable crane and sledge yarder. Different factors such as transport direction, slope, distance to forest road, efficiency or cost were also taken into account in decision making. Various planning strategies were developed, including maximization of profit, minimization of timber loss, under time restrictions and solved with LINDO software. One of the strategies was selected based on the availability of the machineries, legal arrangements, staff and economic conditions of the forest enterprise. According to the selected strategy (STR2), with the maximal total profit from timber production including time constraints less than 2,000 hours for cable cranes and sledge yarders, 6,365,205 € would be earned, 19,055 hours would be spent, and 1,697.8 m3 timber would be lost, while 91.77 damage would occur. As a result this determination could bring us benefits especially in environmental awareness, time, labor and money when compared to the classical approaches. ; Planiranje sječe dugotrajna je i zahtjevna aktivnost, posebice kad uključuje operativne planove bez sustava za donošenje odluka. Ovime se istraživanjem odredila razina etata i sustavi privlačenja drva za svaku sastojinu u jedinici za upravljanje smrekovom šumom u planinskoj jedinici İkisu u Turskoj pomoću modela linearnog programiranja napravljenog za vremenski horizont planiranja od 50 godina. Prvo, kako bi se odredila razina sječe, razmatrala se maksimizacija debla koja ne prelazi određenu udaljenost od centroida odjeljka i najbliže ceste. Za prvi period vremenskog horizonta planiranja određen je godišnji etat od otprilike 68728 m3. Zatim je uključeno šest različitih sustava za privlačenje drva tijekom određivanja metode privlačenja drva za period od prvih 10 godina horizonta planiranja. To su ljudska snaga, životinjska snaga, šumski traktor, mala pokretna dizalica, srednja pokretna dizalica i vitlo na saonicama. U donošenju odluka također su razmatrani različiti čimbenici kao što su smjer transporta, nagib, udaljenost od ceste, učinkovitost ili troškovi. Razvijene su različite strategije planiranja, uključujući maksimizaciju profita, minimizaciju gubitaka u proizvodnji, vremenska ograničenja, te su problemi riješeni pomoću sustava LINDOTM. Jedna od strategija odabrana je temeljem dostupnosti strojeva, zakonskih rješenja, osoblja i ekonomskih uvjeta šumarije. Prema odabranoj strategiji (STR2), uz maksimalni ukupni profit od proizvodnje debla, uključujući vremensko ograničenje od manje od 2000 sati rada žičare i vitla na saonicama, zaradit će se 6365205 €, potrošit će se 19055 sati, i izgubit će se 1697.8 m3 debla te će nastati šteta od 91.77. Kao rezultat, ta odluka bi mogla donijeti i koristi, posebice u ekološkoj svijesti, vremenu, radu i novcu kada se usporedi s klasičnim pristupima.
Harvest scheduling and operational planning for mountainous areas: a case study for Ikisu planning unit ; Planiranje sječe i operativno planiranje za planinska područja: studija slučaja planske jedinice Ikisu
Harvest scheduling has emerged as time consuming and difficult activity especially when includes operation plans in the absence of decision support systems. In this study, the level of allowable cut and timber extraction system for every stand was determined for spruce management unit of a mountainous İkisu planning unit in Turkey using linear programming model designed for 50 year planning horizon. First, different considerations such as maximization of timber cut with non-exceeding more than a certain distance between the centroids of compartments and the nearest forest roads were taken into account in determining the level of harvest. Approximately 68,728 m3 annual allowable cut was determined for the first period of planning horizon. Then, six different timber extraction systems were incorporated during the designation of timber extraction method for the first 10 year period of the planning horizon. These are man power, animal power, skidder, small size cable crane, medium size cable crane and sledge yarder. Different factors such as transport direction, slope, distance to forest road, efficiency or cost were also taken into account in decision making. Various planning strategies were developed, including maximization of profit, minimization of timber loss, under time restrictions and solved with LINDO software. One of the strategies was selected based on the availability of the machineries, legal arrangements, staff and economic conditions of the forest enterprise. According to the selected strategy (STR2), with the maximal total profit from timber production including time constraints less than 2,000 hours for cable cranes and sledge yarders, 6,365,205 € would be earned, 19,055 hours would be spent, and 1,697.8 m3 timber would be lost, while 91.77 damage would occur. As a result this determination could bring us benefits especially in environmental awareness, time, labor and money when compared to the classical approaches. ; Planiranje sječe dugotrajna je i zahtjevna aktivnost, posebice kad uključuje operativne planove bez sustava za donošenje odluka. Ovime se istraživanjem odredila razina etata i sustavi privlačenja drva za svaku sastojinu u jedinici za upravljanje smrekovom šumom u planinskoj jedinici İkisu u Turskoj pomoću modela linearnog programiranja napravljenog za vremenski horizont planiranja od 50 godina. Prvo, kako bi se odredila razina sječe, razmatrala se maksimizacija debla koja ne prelazi određenu udaljenost od centroida odjeljka i najbliže ceste. Za prvi period vremenskog horizonta planiranja određen je godišnji etat od otprilike 68728 m3. Zatim je uključeno šest različitih sustava za privlačenje drva tijekom određivanja metode privlačenja drva za period od prvih 10 godina horizonta planiranja. To su ljudska snaga, životinjska snaga, šumski traktor, mala pokretna dizalica, srednja pokretna dizalica i vitlo na saonicama. U donošenju odluka također su razmatrani različiti čimbenici kao što su smjer transporta, nagib, udaljenost od ceste, učinkovitost ili troškovi. Razvijene su različite strategije planiranja, uključujući maksimizaciju profita, minimizaciju gubitaka u proizvodnji, vremenska ograničenja, te su problemi riješeni pomoću sustava LINDOTM. Jedna od strategija odabrana je temeljem dostupnosti strojeva, zakonskih rješenja, osoblja i ekonomskih uvjeta šumarije. Prema odabranoj strategiji (STR2), uz maksimalni ukupni profit od proizvodnje debla, uključujući vremensko ograničenje od manje od 2000 sati rada žičare i vitla na saonicama, zaradit će se 6365205 €, potrošit će se 19055 sati, i izgubit će se 1697.8 m3 debla te će nastati šteta od 91.77. Kao rezultat, ta odluka bi mogla donijeti i koristi, posebice u ekološkoj svijesti, vremenu, radu i novcu kada se usporedi s klasičnim pristupima.
Harvest scheduling and operational planning for mountainous areas: a case study for Ikisu planning unit ; Planiranje sječe i operativno planiranje za planinska područja: studija slučaja planske jedinice Ikisu
Çalişkan, Erhan (Autor:in) / Karahalil, Uzay (Autor:in)
31.08.2017
Šumarski list ; ISSN 0373-1332 (Print) ; ISSN 1846-9140 (Online) ; Volume 141 ; Issue 7-8
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
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