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Estimating the accuracy of site index curves by means of simulation

Hägglund, Björn (1975). Estimating the accuracy of site index curves by means of simulation. Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 129
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Abstract

The aim of this study is to develop a method for estimating the accuracy of site index curves which is independent of the method used for the construction of the curves. Site index curves for Scots pine in Sweden are used to illustrate the method. The investigation deals mainly with prediction errors, i.e. errors caused by actual height development not following the site index curves. Permanent plot data is used to construct a stochastic, autoregressive simulation model, by means of which it is possible to study the variation of site index over age within stands over long periods. A number of simulations are performed and used for estimating prediction errors. Earlier investigations provide figures on sampling and measurement errors which, together with estimatedprediction errors, are used to obtain recommendations on the number of plots required within a stand to reach a predefined level of accuracy at site index estimation.

Authors/Creators:Hägglund, Björn
Title:Estimating the accuracy of site index curves by means of simulation
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1975
Number:129
Number of Pages:34
Place of Publication:Stockholm
Publisher:Skogshögskolan
ISBN for printed version:91-38-02562-0
ISSN:0039-3150
Language:English
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:site index curves, Scots pine, plot data
URN:NBN:urn:nbn:se:slu:epsilon-9-70
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-70
ID Code:5645
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:07 Feb 2011 00:00
Metadata Last Modified:13 Nov 2015 14:09

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