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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Miškotyra / Forestry (A004)
Author(s): Kuliešis, Andrius;Kulbokas, Gintaras;Kuliešis, Andrius A
Title: The harmonisation of growing stock volume estimation standards, used in national and stand wise forest inventories
Is part of: The Nordic-Baltic Co-operation group for Forest Inventory EFINORD - SNS network meeting and scientific conference : August 21-23, 2013 Institute of Forest Management and Wood Science, Faculty of Forest and Ecology, Aleksandras Stulginskis University, Kaunas reg.,Lithuania : abstracts and brief profiles of participants. Akademija ( Kauno r.) : ASU leidybos centras, 2013
Extent: p. 18
Date: 2013
Abstract: Different inventories use different methodological background for growing stock volume estimation that is not always adopted for this purpose as standards, and usually is the reason of unjustified differences between results of inventories. Object for growing stock volume estimation in stand wise inventory is stand, while in national forest inventory it is detailed to the individual tree. Form factor models, depending on height or height and diameter, sometimes are used not considering different nature of objects in the inventory. This paper deals with peculiarities of standards used for estimation of growing stock volume in stand wise and national forest inventories of Lithuania and their influence on the results of these inventories. Data of 5992 permanent plots (data source - NFI 2006-2010) and 3290 temporary plots (data source - mature stands inventory of 2009) with 137.9 thousands DBH measurements and 26751 tree height measurements were used for study. Form height models employed in stand wise inventory and form factors models employed in national forest inventory were used for study too. Form factors of trees as well as form factors of stands decrease, when height is stable, but diameter of tree or mean diameter of stand increases. Differences in form factors of trees or stands of the same height, but different diameter varies up to 5-12 percent
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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