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Comparing the characteristics of boom-corridor and selectively thinned stands of Scots pine and birch

Nuutinen, Yrjo and Miina, Jari and Saksa, Timo and Bergström, Dan and Routa, Johanna (2021). Comparing the characteristics of boom-corridor and selectively thinned stands of Scots pine and birch. Silva Fennica. 55 , 10462
[Research article]

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Abstract

Young, dense forest in Finland and Sweden urgently need to receive first thinning. In such stands, conventional selective thinning methods make the harvester work time consuming and, thus, costly. To make small-sized trees economically competitive as raw material for bioenergy and biorefining, new harvesting technologies and/or thinning methods need to be developed. A potential solution is boom-corridor thinning (BCT), rendering effective cutting work. The aim of this study was to describe and compare the stand structure of two Scots pine stands (Pinus sylvestris L.) and one birch-dominated (Betula pendula Roth with natural downy birch, B. pubescens Ehrh.) stand after BCT and selective thinning at the first thinning phase. Furthermore, simulations were conducted to predict the future stand development after the first thinning treatments. The density of the growing stock was 16-46% higher after BCT treatment than after selective thinning because BCT stands included more small and supressed trees with a dbh < 100 mm. However, the numbers of future crop trees with a dbh > 140 nun per hectare were at the same level in both treatments. The stem volume removal per hectare did not differ between treatments. However, simulation of stand development and intermediate thinning and clearcutting revealed that the total removal volume was 10-18% higher in BCT stands compared to selectively thinned ones. The saw log volumes harvested did, however, not differ between treatments. This study shows that BCT generates stands with higher biodiversity compared to conventional thinning as higher levels of biomass removal can be reached throughout stand rotations.

Authors/Creators:Nuutinen, Yrjo and Miina, Jari and Saksa, Timo and Bergström, Dan and Routa, Johanna
Title:Comparing the characteristics of boom-corridor and selectively thinned stands of Scots pine and birch
Series Name/Journal:Silva Fennica
Year of publishing :2021
Volume:55
Article number:10462
Number of Pages:22
Publisher:FINNISH SOC FOREST SCIENCE-NATURAL RESOURCES INST FINLAND
ISSN:0037-5330
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Share Alike 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:biomass, first thinning, forestry, geometrical thinning, systematic thinning
URN:NBN:urn:nbn:se:slu:epsilon-p-113135
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113135
Additional ID:
Type of IDID
DOI10.14214/sf.10462
Web of Science (WoS)000668395700001
ID Code:25076
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Deposited By: SLUpub Connector
Deposited On:27 Aug 2021 10:25
Metadata Last Modified:27 Aug 2021 10:31

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