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Preverjanje natančnosti merjenj na stalnih vzorčnih ploskvah v GGE Radovljica : diplomsko delo (visokošolski strokovni študij)
Krmelj, Barbara (Author), Hladnik, David (Mentor) More about this mentor... This link opens in a new window

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Abstract
V GE Radovljica - desni breg Save so leta 1979 začeli izvajati kontrolno vzorčno metodo. Tretja ponovitev merjenja na stalnih vzročnih ploskvah je bila opravljena leta 2009 na vzorčni mreži gostote 200 x 200 m. Izmerili smo skupno 326 stalnih vzorčnih ploskev in preverili, kakšne napake so se pojavljale pred desetimi leti. S sistemom GPS smo ocenili pozicijsko natančnost za 228 središč vzorčnih ploskev in ugotovili, da je 60 % ploskev zamaknjenih za več kot 20 m. Na vzorčnih ploskvah se število napak pri merjenju dreves povečuje s porabo časa za njihovo iskanje in merjenje dreves. Število napak na stalnih vzorčnih ploskvah se povečuje tudi z večjim ocenjenim številom dreves na hektar in večjo težavnostjo terena.

Language:Slovenian
Keywords:gozdna inventura, stalne vzorčne ploskve, kontrola natančnosti, Radovljica
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2010
Publisher:[B. Krmelj]
Number of pages:X, 31 f.
Place:Ljubljana
UDC:630*52(043.2)=163.6
COBISS.SI-ID:3053734 Link is opened in a new window
Views:459
Downloads:185
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Secondary language

Language:Unknown
Abstract:
In the forest management unit Radovljica the continuous forest inventory was launched in 1979. In the year 2009 the third repetition of measurments was done in the form of systematic sampling net of 200 x 200 m. The objectives of our work was to assess the positional accuracy of the sample plots and to check what kind of measurement errors have been done ten years ago, when the previous remeasurment was done. We have remeasured 326 permanent sample plots,228 of them were located using the GPS system. The survey showed that 60% of sampling plots centers had different theoretical and actual location for more than 20 m. We have find out that consumption of time has influence on the amount of measurement errors that appear on sampling plots. The survey also showed that estimated number of trees per hectare and configuration of terrain has influence on the amount of errors on sampling plots.


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