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Post: Ponsse solutions for thinning sites

Growing a productive forest requires hard work and commitment. Correctly timed thinning improves the forest’s growth conditions and makes trees grow sturdier more quickly. Thinning supports forest biodiversity when part of the forest is always in the growth phase.

 “Thinning can also be called improvement felling, as it ensures the productivity of the forest, and the high quality and health of trees,” says Tuomo Moilanen, forest specialist at Ponsse. “The better a forest grows, the better it sequesters carbon. Thinning ensures that trees can be processed into high-quality products that sequester carbon for dozens or even hundreds of years,” says Moilanen.

In cut-to-length (CTL) harvesting, trees are already processed up to the intended length in the forest, enabling thinning to be ecological. When the harvester operator plans trails so that they can also be driven by the forwarder, trees can be both felled and transported without needing to move around unnecessarily in the forest.

“At thinning sites, the distance between trails is roughly 20 metres, and trees remaining by the side of the trail will grow in Finnish conditions 20-25 per cent more quickly, because they will have room to grow, both above and below,” Moilanen says.

Ponsse’s harvesters, forwarders and harvester heads have also been designed for thinning sites

The six-wheeled PONSSE Beaver and the eight-wheeled PONSSE Fox, Ponsse’s harvesters in the smaller size category, are ideal solutions for first thinning. PONSSE Fox is an excellent choice, especially when operating in soft terrain. High-flotation tracks should be selected as optional equipment for softer terrain to prevent surface damage.

At heavier thinning sites, the PONSSE Cobra and Scorpion harvesters, combined with the H5 or H6 harvester head, are the best choices in terms of productivity. In PONSSE Scorpion, the unobstructed visibility in all directions, together with cabin and crane levelling, makes working smooth even at dense thinning sites. As eight-wheeler machines, both models are also excellent in soft terrain.

While Elk and Wisent are the most popular PONSSE forwarders for thinning sites, Buffalo is also an excellent choice, especially when distances are longer, and the aim is to improve productivity. The forwarder can easily pick up trees from thinning sites when trails are properly protected (with branches) and as straight as possible; the fewer sharp bends there are, the less surface damage is caused.  

At thinning sites, the harvester head should be selected according to the dominant tree species. However, it should be considered that damaged trees and other trees in poor condition must also be removed from thinning sites, calling for sawing and feed force from the harvester head. The harvester head must be reliable at thinning sites because a large number of trees are produced quickly during each shift.      

At thinning sites, much rests on the forest machine operator – the operator decides what trees are removed and what are left standing. The forest owner hands over their assets to a professional forest machine operator to receive the highest possible profit, also in the future.

During September Ponsse organized an online event where our customers and specialists explained more about our solutions for thinning sites.

Watch the web event recording subtitled in English, Swedish, French, German, Russian, Spanish, and Portuguese and learn more: https://youtu.be/SR-4a6fKxPE

Source: Ponnse

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  • Afrequip
  • Latschbacher
  • Alternative Structures Logo
  • Arxada
  • Bell
  • Ezigro Seedlings
  • Foresta Timber & Board
  • FSC
  • Hin-Tech Manufacturing
  • Husqvarna
  • John Deere
  • Khulani Timber Industries
  • Kwamahlati Training Services
  • LESH
  • Loadtech Load Cells
  • Logmech
  • Merensky
  • Mondi
  • Those who grow alone, die alone: why transformation is strategic for the MTO Group
  • NCT
  • Pangolin
  • Patula Risk
  • Ponsse
  • Rance Timbers
  • Sabie Poles
  • SAFCOL
  • Sappi
  • Saw Specialists
  • SAWPA
  • SSA
  • Stihl
  • Sunshine Seedling Services
  • Treated Timber Products
  • TWK
  • UCL Sawmill
  • Wood-Mizer
  • WoodBiz Africa
  • Wuhlf

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