<abstract xmlns="http://www.w3.org/1999/xhtml">

In 2007, three mature hemi-boreal stands were selected from Järvselja forest district, South-East Estonia to establish one-hectare-large test plots for the international inter-comparison experiment of radiation models (RAMI). All trees with a stem diameter at breast height greater than 4 cm were mapped and measured in the field. In summer 2019, the forests were inventoried again. Here we present a summary of changes that occurred in the forest structure – mainly growth and mortality. In the birch stand basal area <italic>G</italic> has increased from 23.3 m2 ha-1 to 28.2 m2 ha-1 in the upper layer and the number of trees <italic>N</italic> has decreased from 654 to 565 ha-1. In the upper layer of spruce stand <italic>G</italic> has increased from 30.9 m2 ha-1 to 35.4 m2 ha-1 and <italic>N</italic> has decreased from 774 to 724 ha-1 and <italic>N</italic> substantially decreased in the lower layers from 912 to 577 ha-1. In the pine stand <italic>G</italic> has increased from 28.3 m2 ha-1 to 29.1 m2 ha-1 and N decreased from 1116 to 971 ha-1. The three test stands can be used now for validating remote sensing data-based estimates of forest inventory variables at single tree level.
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In 2007, three mature hemi-boreal stands were selected from Järvselja forest district, South-East Estonia to establish one-hectare-large test plots for the international inter-comparison experiment of radiation models (RAMI). All trees with a stem diameter at breast height greater than 4 cm were mapped and measured in the field. In summer 2019, the forests were inventoried again. Here we present a summary of changes that occurred in the forest structure – mainly growth and mortality. In the birch stand basal area G has increased from 23.3 m2 ha-1 to 28.2 m2 ha-1 in the upper layer and the number of trees N has decreased from 654 to 565 ha-1. In the upper layer of spruce stand G has increased from 30.9 m2 ha-1 to 35.4 m2 ha-1 and N has decreased from 774 to 724 ha-1 and N substantially decreased in the lower layers from 912 to 577 ha-1. In the pine stand G has increased from 28.3 m2 ha-1 to 29.1 m2 ha-1 and N decreased from 1116 to 971 ha-1. The three test stands can be used now for validating remote sensing data-based estimates of forest inventory variables at single tree level.

Changes during twelve years in three mature hemiboreal stands growing in a radiation model intercomparison test site, Järvselja, Estonia

Forestry Studies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Järvseljal rahvusvahelise kiirguslevimudelite võrdluseksperimendi testalal asuva kolme hemiboreaalse puistu areng ajavahemikus 2007–2019

In 2007, three mature hemi-boreal stands were selected from Järvselja forest district, South-East Estonia to establish one-hectare-large test plots for the...

Changes during twelve years in three mature hemiboreal stands growing in a radiation model intercomparison test site, Järvselja, Estonia

Article Category: Short communication

Published Online: Dec 01, 2021

Page range: 112 - 122

Received: Jun 14, 2021

Accepted: Aug 30, 2021

DOI: https://doi.org/10.2478/fsmu-2021-0007

© 2021 by the authors., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.