4 billion trees are cut down each year for paper production
In Scandinavia, for paper production is mainly used fir
Trees that grew with smooth lighting in the woods are healthy and their height reaches 20-25 meters, while those who grew up in the darkness of the pine tree forest are small, thick and short.
Forests cover 40% of the European Union |
and they have a huge potential to boost the economy, combating climate change, safeguarding biodiversity, water quality and resource efficiency. Wood plays an important role in the EU effort to achieve the goals of renewable energy sources. |
An average tree gives 40 kg stationery (8000 sheets A4) |
it is about 80 kg newsprint. Consider that 500 sheets of A4 costing 3-4 € per entire tree, so it is cut for 50-60 €.
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Long before the technology and logs transfer infrastructure (by trucks), the “log driver” was driving the logs by forests through the rivers to the collecting points.
Plane tree (Pilion Greece 1000 years old)
Olive tree (Chania Crete Greece 3000 years old)
Chestnut tree (Sant A’lfio Sicelia 3000 years old)
Japanese Cedar (Jomon Sugi Yaku Shima Japan 2000-7000 years old)
Trees also play an important role in producing oxygen and reducing the carbon dioxide in the atmosphere. In 2005 there were approximately 400 billion trees on Earth, about 61 per person. During the growth of the tree, it adds a new ring below its cortex. If we cut a tree we can count its age by the rings where each one, is equal to one year. Seasonal circular development of the shank, stand out the various cycles which makes it possible to measure the age of a tree. Annual cycles determined how the trees live. The oldest tree estimated to 6000 years old (6000 cycles, ogress tree).
Serious sawnwood attack risks, exist at the phase of natural drying. That happens if not followed basic technology standards. The tree – trunk collecting location, should be open to the horizon without vegetation of grasses, bushes, flat, no standing water, no piles of wood chips and sawn residues, which are a source of infection. This is something that occurs in many Greek sawmills. The best natural drying is open sheds.
High temperature, enhancing contraction and expansion of the wood surface. The wind causes pitting, removes superficial wood fiber, and enhances the action of water. Finally, air pollution causes wood deterioration.
When wood, exposed for a long time in outdoor conditions it suffers from climate changes (temperature, relative humidity, rain, snow, wind, light). Changes like color change, distortions, surface corrosion, sun’s ultraviolet radiation causes damage to the membranes of the wells. High temperature, enhancing contraction and expansion of the wood surface. The wind causes pitting, removes superficial wood fiber, and enhances the action of water.
Even nowadays, the profession of woodcutter and all activities related to it, are one of the most dangerous occupations. Accidents are often. High skills, enormous patience and perseverance (to address many foreseeable and unforeseeable difficulties) required. The US statistics measure 91.3 logging – workers deaths per 100,000 workers. In places such as Latin America or Africa where security measures are non-existent, the risk is even higher.