All english articles in waldwissen.net

All english articles in waldwissen.net

 
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Laser scanning trees

Inventory – everybody knows that out of firms, but a stock is also taken in forest. To make that easier, you can use laser scanning. It is possible to make it airborne, but also terrestrial – with TLS.

Bark beetles, beware: The three-toed woodpecker!

Three-toed woodpeckers predominantly prey on bark beetles and play a key role in controlling beetle populations in forests dominated by conifers. Their impact is greatest where they occur year-round and thus also breed there. For this, the average deadwood volume needs to be at least 33 m3 per hectare.

Tree growth on the fast track

Continuous monitoring of growth on experimental forest plots since 1870 – this is a global rarity. Just as fascinating is what this observation has revealed: our trees have been growing faster over the last five decades than they did before.

Productivity models for wood harvesting operations

The productivity model HeProMo allows to estimate productivity and costs of different harvesting operations.

MOTI: a pocket-sized tool for forest inventories

An application developed by Swiss researchers at the School of Agricultural, Forest and Food Sciences (HAFL) makes it possible to collect forest inventory data, such as the basal area or tree height, with your smartphone.

Forest protection with sessile oak

Sessile oak is a highly desired tree species. However, a few of the many residence found living on the tree are causing problems for it. It is particularly precarious for the tree when early and late defoliators appear together.

Rotting spruce trees – what can be done to control red rot?

Buyers of timber are looking for white, firm spruce timber – and are prepared to pay a good price for it. Reddish discolourations on the other hand are not very popular: beware red rot! Here the problem is not the colour but the decomposition of the wood.

Pruning for quality improvement

The production of high quality timber requires that some tree species be pruned for quality improvement. This must be done expertly and professionally to ensure success.

Scent detection dogs for the Asian longhorn beetle

Dogs are known to be used for explosive or medical detection or as drug-sniffing dogs. But did you know you can also use them as detection dogs in timber trade? The Austrian Research Centre for Forests (BFW) trains and works with the animals to detect the Asian longhorn beetle and the Citrus longhorn beetle.

Spruce and climate change – what is to be done?

No need for panic, stay cool! It really cannot be inferred that stands of spruce tree will suddenly and abruptly disappear from large areas throughout the country. In this article you will find recommendations for action and alternatives to spruce cultivation in low-lying areas.

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