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A census for the trees: the national forest inventory counts in the district of Miesbach

2022-06-30T08:09:56.175Z


A census for the trees: the national forest inventory counts in the district of Miesbach Created: 06/30/2022, 10:00 am By: Alexandra Korimorth Tree count in the mountain forest: while Felix Bierling (left) measures the circumference of a trunk, Christoph Riedel types the values ​​into his laptop. © Stefan Schweihofer Experts collect comprehensive data on the stock every ten years during the na


A census for the trees: the national forest inventory counts in the district of Miesbach

Created: 06/30/2022, 10:00 am

By: Alexandra Korimorth

Tree count in the mountain forest: while Felix Bierling (left) measures the circumference of a trunk, Christoph Riedel types the values ​​into his laptop.

© Stefan Schweihofer

Experts collect comprehensive data on the stock every ten years during the national forest inventory.

This is also the case in the district of Miesbach.

District –

Inventories are dry, dusty affairs in stuffy warehouses and basements?

Far from it when it comes to the national forest inventory, which takes place every ten years.

At the press event on Tuesday, this turned into an adventurous treasure hunt in the Bad Wiesseer Bergwald.

Covered in fog, high above Lake Tegernsee at the end of Breitenbachtalstraße, where this has long since ceased to be a street, and then another 173 meters up the steep ladder through thickets heavy with rain, regrowing young trees and tall ferns, over dead wood trunks overgrown with moss and mushrooms and past majestic ones , 100 to 200-year-old firs, beeches, sycamores and sycamore elms: the goal towards which the foresters Christoph Riedel and Felix Bierling, who are trained in inventory, are working on behalf of the Bavarian State Institute for Forestry and Forestry (LWF) together with State Inventory Manager Wolfgang Stöger and Forest Director Korbinian Wolf from the Office for Food, Agriculture and Forestry (AELF) in Holzkirchen is anything but obvious.

It is an iron pipe hidden in the forest floor, positioned there in 1987.

Iron rings in the ground reveal the measuring points

It is one of the 128 inventory points in the district of Miesbach - in the neighboring district of Bad Tölz-Wolfratshausen there are even 164 inventory points - on the four by four kilometer grid with which the LWF Bavaria's forest areas 35 years ago - i.e. still in analogous times without computer-aided data processing - has covered.

Since then, when the forests were threatened by acid rain and the dying sword of Damocles hung over German forests, these 8,000 inventory points throughout Bavaria have been checked regularly every ten years.

This should document the current stock and condition of the forest and collect data that provide information about its development.

Because the forest is a long-term project.

Christoph Riedel and Felix Bierling are equipped with all sorts of technical equipment such as a compass and GNSS device to find the said iron ring.

Then with a ruler, measuring tape, ultrasonic tree height measuring device and all-terrain laptops to record the approximately 15 trees - and exactly the same for each inventory run - in the vicinity of this inventory point.

The type of tree, diameter, height, age, special features and injuries such as possible timber harvest or storm damage to the trees are determined and entered.

The regrowing young trees, the ground vegetation and parameters relevant to nature conservation such as dead wood, biotope tree characteristics, structural diversity and forest habitat types are also precisely recorded.

They play a major role in forecasting the future of the respective forest and subsequently in advising forest owners.

Closing expected towards the end of the year

The fourth inventory around the 1100 meter high inventory point in the Bad Wiesseer Bergwald lasts a good one and a half hours.

“The forest we are in at the moment almost corresponds to our ideal: near-natural and structurally rich mixed forests of old and young trees, here even with a lot of dead wood for insects, tree fungi or birds.

This forest is healthy, its future is secured,” the experts explain with satisfaction and not without pride.

"The adventurous ascent was worth it, wasn't it?!"

Even for non-professionals it is here, where a lot of light falls between tall firs and beeches, man-high young beeches, waist-high ferns, knee-high young firs and spruces and on velvety carpets of moss, almost magically beautiful.

Speaking of fairy tales: Riedel and Bierling have not yet had close contact with a real wolf or bear.

Except for the sometimes adventurous arrival at the inventory point, the surveys proceed calmly.

After completion of the recordings at the end of 2022, the extensive data will be evaluated, analyzed and processed.

They provide information about the development of the tree species composition, the age, the wood stock, its growth and use.

"So how much forest was used and also how much can be used in the future," explains Wolfgang Stöger with a view to the forest conversion necessary due to climate change.

Korbinian Wolf nods in agreement: "We will see which tree species can ward off storms, heat, drought and also harmful insects and where we might also recommend that forest owners give a little help."

also read

Farewell to a very good friend: Miesbach mourns the loss of Siggi Hacker

Real estate boom continues: Now the prices for normal locations are climbing in the district of Miesbach

Because one thing is clear: the forest, especially the mountain forest, has a major protective function against mudslides, snow avalanches and floods.

Without him, settlement in the valleys would be impossible.

Not to mention its globally important function as a CO2 binder and renewable energy source.

a.k

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Source: merkur

All news articles on 2022-06-30

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