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Changes during twelve years in three mature hemiboreal stands growing in a radiation model intercomparison test site, Järvselja, Estonia
- Source :
- Forestry Studies. 74:112-122
- Publication Year :
- 2021
- Publisher :
- Walter de Gruyter GmbH, 2021.
-
Abstract
- 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.
- Subjects :
- TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY
Forestry
Subjects
Details
- ISSN :
- 17368723
- Volume :
- 74
- Database :
- OpenAIRE
- Journal :
- Forestry Studies
- Accession number :
- edsair.doi...........980d9f9314801ad610e773799e4197b2