Viljakate kasvukohtade männi-, kuuse- ja kasepuistute majandamise tasuvus lühikese raieringi korral
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Kuupäev
2013
Kättesaadav alates
ainult raamatukogus, only in library
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Magistritöö eesmärgiks on uurida Eestis kasvavate viljakate kasvukohtade männi-, kuuse- ja kasepuistute tasuvust lühikese raieringi korral ning võrrelda saadud tulemusi varasemate uurimuste tulemustega. Lisaks antakse ka ülevaade lühikese raieringi vajalikkusest ning positiivsetest ja negatiivsetest aspektidest.
Peamisteks põhjusteks, mis soodustavad lühikese raieringiga metsa majandamist, on puiduturul suurenenud peenemate sortimentide kasutus ning metsaomaniku võimalus ise oma eluajal uuendatud metsast tulu saada.
Varasemate uurimustega on tõestatud, et lühikese raieringiga majandamisel viljakates kasvukohtades on männi-, kuuse- ja kasepuistute kasvatamine tasuv. Kuid need tulemused olid saadud teoreetiliselt ning tegelikult neid uuritud puistuid ei eksisteerinud. Antud töös on aga kasutatud metsaregistri andmeid ning nendest lähtuvalt on teostatud erinevaid tasuvusarvutusi reaalselt olemasolevate puistutega. Seejärel on saadud tulemusi võrreldud varasemate uurimustega.
Tulemustest selgub, et kõik töös käsitletud puistud toodavad kasumit. Puuliigi põhiselt osutusid kõige kasumlikemaks männikud ning kõige vähem kasumlikeks kaasikud. Võrreldes varasemate uurimustega andsid antud töös uuritud männikud ja kuusikud isegi parema tasuvuse, kaasikud aga oluliselt halvema tasuvuse kui varasemalt oli saadud.
Toetudes tasuvusarvutustele ning nende võrdlusele varasemate uuringute tulemustega, selgub et nii männi-, kui kuusepuistud osutuvad viljakates kasvukohtades lühikese raieringiga majandades vägagi tasuvateks. Seda ei saa aga kindlalt väita kasepuistute kohta.
The aim of this Master's thesis is to study short-rotation profitability of Scots pine, Norway spruce and silver birch stands growing on fertile sites in Estonia and to compare the results with previous studies. In addition, it gives an overview of the positive and negative aspects of short-rotation. The main reasons, which contribute short-rotation forest management, are the increased use of thinner assortments in timber market and forest owners opportunity to receive income from clear-cuttig forest during their lifetime. Previous studies have showed, that short-rotation management of Scots pine, Norway spruce, and silver birch stands is profitable. However, these results are theoretical and the stands do not exist in reality. In this study, the data from the Forest Stand Database was used and different economic analysis have been done with data of existing real stands. Later, restults obtained have been compared to previous studies. The results show, that all the stands used in the study produce profit. By species the most profitable are Scots pine forests, and the least profitable are silver birch forests. Compared to previous studies Scots pine and Norway spruce forests were better but silver birch forest significantly worse in this study. Based on economic analysis and comparing it to previous studies, it shows that shortrotation management of Scots pine and Norway spruce stands growing in fertile sites using is very profitable, the same cannot be sure for silver birch stands.
The aim of this Master's thesis is to study short-rotation profitability of Scots pine, Norway spruce and silver birch stands growing on fertile sites in Estonia and to compare the results with previous studies. In addition, it gives an overview of the positive and negative aspects of short-rotation. The main reasons, which contribute short-rotation forest management, are the increased use of thinner assortments in timber market and forest owners opportunity to receive income from clear-cuttig forest during their lifetime. Previous studies have showed, that short-rotation management of Scots pine, Norway spruce, and silver birch stands is profitable. However, these results are theoretical and the stands do not exist in reality. In this study, the data from the Forest Stand Database was used and different economic analysis have been done with data of existing real stands. Later, restults obtained have been compared to previous studies. The results show, that all the stands used in the study produce profit. By species the most profitable are Scots pine forests, and the least profitable are silver birch forests. Compared to previous studies Scots pine and Norway spruce forests were better but silver birch forest significantly worse in this study. Based on economic analysis and comparing it to previous studies, it shows that shortrotation management of Scots pine and Norway spruce stands growing in fertile sites using is very profitable, the same cannot be sure for silver birch stands.
Kirjeldus
Märksõnad
puistud, raiering, raie, rentaablus, metsamajandus, magistritööd