Mixed estimation in calibration of volume functions of Scots pine.

Korhonen, Kari T.

Full text of this article is only available in PDF format.

Silva Fennica vol. 27 no. 4 article id 5520 | 1993 | Article

Kari T. Korhonen

Mixed estimation in calibration of volume functions of Scots pine.

Korhonen K. T. (1993). Mixed estimation in calibration of volume functions of Scots pine. Silva Fennica vol. 27 no. 4 article id 5520. https://doi.org/10.14214/sf.a15681

Abstract

Regression models for estimating stem volume of Scots pine (Pinus sylvestris L.) were constructed using sample tree data measured in the 7th and 8th National Forest Inventory of Finland. Stem volume were regressed on diameter, basal area of growing stock, and geographic location. The results of the study show that using second order trend surface to describe the geographic variation of the residuals gives satisfactory results. Using mixed estimation for combining old and new sample tree data improves the efficiency of an inventory. The weight of the prior information must be low, because remarkable differences in stem form was found in the two inventories.

The PDF includes an abstract in Finnish.

Keywords
Pinus sylvestris; models; forest inventories; volume; estimation

Published in 1993

Available at https://doi.org/10.14214/sf.a15681 | Download PDF

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