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Henriksson, Lars, 1996. The thinning Quotient - a relevant description of thinning? . Second cycle, A1E. Umeå: SLU, Dept. of Forest Resource Management

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Abstract

Det finns en rad satt att beskriva gallringsformen. Ofta används begreppet gallringskvot i dessa sammanhang utan
att närmare ange vilken metod eller definition som använts for att beräkna den. Detta kan lätt leda till att
missuppfattningar uppstår. Denna studie belyser olika definitioners känslighet for bland annat beståndsstruktur,
gallringsform och stickvägsavstånd. Studien innehåller dessutom en jämforelse mellan olika metoder att mäta och
uppskatta gallringskvoten i ett bestånd. Slutsatsen är att gallringskvotens användbarhet och tillförlitlighet i många
sammanhang är starkt begränsad.

,

Thinnings can be described in many different ways. Frequently, however, the "thinning quotient" is used as a
descriptor. This quotient is usually expressed as the ratio between a mean diameter of the trees extracted and the
trees left, although many definitions exist. In this study, the appropriateness of different definitions is evaluated
through thinning simulations, sampling simulations, and analyses of the impact of strip-roads. The conclusion is
that the value of using thinning quotients as descriptors seems to be limited.

Main title:The thinning Quotient - a relevant description of thinning?
Authors:Henriksson, Lars
Supervisor:Ståhl, Göran
Examiner:UNSPECIFIED
Series:Arbetsrapport / Sveriges lantbruksuniversitet, Institutionen för skoglig resurshushållning och geomatik
Volume/Sequential designation:7
Year of Publication:1996
Level and depth descriptor:Second cycle, A1E
Student's programme affiliation:SY001 Forest Science - Master's Programme 300 HEC
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Keywords:sampling simulation, strip-roads, thinning, thinning quotient
URN:NBN:urn:nbn:se:slu:epsilon-s-1344
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1344
Subjects:Forestry production
Language:English
Deposited On:04 Jul 2012 13:10
Metadata Last Modified:04 Jul 2012 13:10

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