Harvesteriga lõigatud puidu mahu võrdlus puistu takseerandmetega
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Kuupäev
2021
Kättesaadavus
11.09.2021
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Antud töö eesmärgiks on uurida, millised on harvesteri andmete ja metsakorraldusandmete
erinevuste põhjused puidu mahu hindamisel. Algandmeid omavahel võrreldes on näha, et
metsakorraldusandmed näitavad 6,3% suuremat mahtu kui harvesteri andmed.
Antud andmeid aluseks võttes võiks väita, et metsakorraldajad hindavad mahtu tegelikust
suuremaks.
Andmeid lähemalt kõrvutades ja erinevaid põhjuseid vaadeldes võib aga järeldada, et
metsakorraldajad hindavad keskmiselt mahtu 8% väiksemaks.
Harvesteri mahu puhul pole arvestatud seemne- ja säilikpuudega, langile jäävate
raiejäätmetega, samuti töötlemiseks vajaliku ülemõõduga. Metsakorraldusandmete puhul
pole omakorda arvestatud iga-aastase juurdekasvuga.
Erinevaid takseerimisel kasutatavaid tunnuseid omavahel võrreldes on näha, et teatud
puhkudel hindavad metsakorraldajad mahtu suuremaks ja teatud puhkudel väiksemaks.
Erinevate takseertunnuste üle või alla hindamine on kindlasti teema, mida tasuks edasi
uurida ja mida saab väga erinevate tunnuste lõikes analüüsida.
The aim of the thesis is to find out from where comes the difference between timber volumes at harvester data and a forest survey data. When comparing the primary data it shows that forest survey data gives 6,3% larger quantities than a harvester one. Basing the conclusions on the data at hand you could say that forest managers are over evaluating the numbers. Comparing the data more closely and reviewing different aspects, instead it can be concluded that forest managers are evaluating the numbers smaller by 8%. Concerning the harvester data there has not been taken into consideration the seed trees and old crop trees, felling waste that has been left on the area and also the fact that a harvester is programmed to collect the material with small reserve in measures. The same is with forest management data where the yearly increment has not been taken into a consideration. Comparing the different features that are used in forest survey it shows that in certain cases forest managers are either over or under evaluating the planed outcome. The over and under evalaution in forest survey is someting that should be researced further through different perspectives.
The aim of the thesis is to find out from where comes the difference between timber volumes at harvester data and a forest survey data. When comparing the primary data it shows that forest survey data gives 6,3% larger quantities than a harvester one. Basing the conclusions on the data at hand you could say that forest managers are over evaluating the numbers. Comparing the data more closely and reviewing different aspects, instead it can be concluded that forest managers are evaluating the numbers smaller by 8%. Concerning the harvester data there has not been taken into consideration the seed trees and old crop trees, felling waste that has been left on the area and also the fact that a harvester is programmed to collect the material with small reserve in measures. The same is with forest management data where the yearly increment has not been taken into a consideration. Comparing the different features that are used in forest survey it shows that in certain cases forest managers are either over or under evaluating the planed outcome. The over and under evalaution in forest survey is someting that should be researced further through different perspectives.
Kirjeldus
Bakalaureusetöö
Metsanduse õppekaval
Märksõnad
bakalaureusetööd, metsakorraldus, harvestermõõtmine, puistu tagavara