Raidmete potentsiaal männiku, kuusiku, kaasiku ja sanglepiku uuendusraietel Järvselja Õppe- ja Katsemetskonna näitel.
Laen...
Kuupäev
2015
Kättesaadavus
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Raiejäätmete osakaal energia tootmises on leidmas üha suuremat kasutust seoses eesmärgiga
vähendada fossiilsete kütuste tarbimist. Sellest lähtuvalt on töö eesmärgiks anda ülevaade
raiejäätmete energeetilise potentsiaali ja raielangile jäävate koguste üle kase, männi, kuuse
ja sanglepa uuendusraiel.
Töös kasutatud andmed on saadud Järvselja Õppe- ja Katsemetskonna uuendusraielankidelt.
Välitööd teostasid autorid ise. Uuendusraielankidele rajati proovitükid ning kaaluti ära kõik
raidmed, mis proovitükkide sisse jäid. Samuti mõõdeti ära ka oksavallide pikkused.
Kameraaltööd teostati Eesti Maaülikooli metsatööstuse ja puitkütuste laborites, kus järgides
ettenähtud standardeid määrati energia- ja tuhasisaldused.
Uuringu tulemustena saadi teada, kui palju jäi uuritavatele uuendusraielankidele jäätmeid
maha, ning kui suur on nende energeetiline potentsiaal. Kõige rohkem jäätmeid jäi kase
enamusega uuendusraielangile ning kõige energiarikkamad olid samuti kase raidmed.
The percentage of slash in energy production is gaining wider usage for decreasing the usage of fossil fuels. The purpose of this research is to give an overview of the energetic potential of slash and the overall amount of slash in birch, pine, spruce and black alder clearcutting sites. The data used in this research are gathered from clearcutting sites in Järvselja Training and Experimental Forest Center. The field work was done by the authors. Test sites were placed at the clearcutting sites and all the slash, that was in the test site, was weighed. Forwarding tracks were also measured. Laboratory work was done at Estonian University of Life Science laboratories, where the energy and the percentage of ash was found. As a result of this research, there was found how much slash was left behind at the clearcutting sites and how much energetic potential they had. The most slash was at the birch clearcutting site and also the most energy in slash was at the birch site.
The percentage of slash in energy production is gaining wider usage for decreasing the usage of fossil fuels. The purpose of this research is to give an overview of the energetic potential of slash and the overall amount of slash in birch, pine, spruce and black alder clearcutting sites. The data used in this research are gathered from clearcutting sites in Järvselja Training and Experimental Forest Center. The field work was done by the authors. Test sites were placed at the clearcutting sites and all the slash, that was in the test site, was weighed. Forwarding tracks were also measured. Laboratory work was done at Estonian University of Life Science laboratories, where the energy and the percentage of ash was found. As a result of this research, there was found how much slash was left behind at the clearcutting sites and how much energetic potential they had. The most slash was at the birch clearcutting site and also the most energy in slash was at the birch site.
Kirjeldus
Märksõnad
raiejäätmed, hakkpuit, biokütused, raie, Järvselja Õppe- ja Katsemetskond, bakalaureusetööd