The right mix should bring it to bruckenau’s city forest

the right mix should bring it to bruckenau's city forest

The schafberg above the industrial area, a forest stucco called gansrain. This is the "playground by joachim manke and birgit badde. The two employees of the forestry administration rupboden have been taking care of the city forest since july – and in the past few days they have dropped a lot of trees at the gansrain. "Normal thinning", manke calls it.

But that is not all. The gansrain is a good example of how the town forest of bad bruckenau is being made fit for the future. In september, manke and his colleague badde marked the trees that were to be removed. Afterwards, employees of the forestry company kohl from riedenberg jerked off with a machine called a harvester.

They "reaped the trees, as it is called in the jargon, freed from branches and roots "ruckten from the forest to the forest road. There they lie stacked now. The forest stand in which they stood is now adorned with many tree stumps. Only a few of the spruces seem to have remained standing.

The impression swaps. In fact, the forestry workers have taken out 20 percent of the stand. And that only on half of the total 28 hectares of gansrain. Creating light for renewable trees. But also the chance to make the forest less vulnerable to global warming.

For manke and badde will not replant the gansrain with spruce – creating a monoculture that will be particularly sensitive to the predicted higher temperatures and more severe drought. This is what bark beetles and other pests eat.
The trend is toward a mixed forest of deciduous and coniferous trees. He's the one forestry experts believe is most likely to defy climate change. Therefore, a total of five hectares of beech trees are to be "artificially brought in" on the gansrain become. Not on interrelated flat areas, but at specific points. This is what manke told the city council members around mayor brigitte meyerdierks. They visited their urban forest on monday and were scheduled to vote on tuesday – after press time – on forest management plans for the next 20 years.

1992: conifer content 68 percent
According to wilhelm schmalen of the office for food, agriculture and forestry in bad neustadt, the proportion of coniferous wood in the city forest was 68 percent at the last inventory in 1992, so it was quite rough. 52 percent of the trees were spruce, eight larches and seven pines. Douglas fir played a minor role at one percent.

The proportion declined
In this year's inventory, the coniferous percentage had dropped to 57 percent. With spruce accounting for 41 percent of the total, larch for eleven and pine for four. The share of douglas fir remained the same.
For the next 50 to 100 years, the forestry experts have set a general stocking target. And that is: tree species change. The proportion of coniferous trees should be reduced to 40 percent, the spruce only 25 percent of the total stock. The share of larches should then be ten percent, that of douglas fir five percent. Assuming a majority on the city council.
That there are not only supporters of this reorganization was shown by the objection of kammerer leo romeis. He is responsible for forest management at the city administration. "With the spruce we can work economically", he said.

In the past years, good annual results were achieved: "the black zero was achieved." In 2007 – after a storm had caused a lot of broken wood – even 400,000 euros had been earned.
Romeis feared that hardwood could not produce such good yields. Especially since deciduous forest is also prone to attack. Wilhelm schmalen can understand these arguments: "according to current calculations, he is right." The spruce grows relatively fast, regularly and straight.

Economic risk
"Not for nothing it is called the bread tree of forestry." But the economic risk of this tree species is increasing under changing climatic conditions. The risk of not being able to take advantage of the full age of the tree is increasing. Joachim manke also sees that the spruce has reached its "ecological limit" stobe. Freelance forestry expert bernd trunk also sees them at a disadvantage. Because, as a shallow-rooted plant from northeastern europe, it loves moist, nutrient-rich soil. Other trees, like the beech, rooted deeper, bringing nutrients to the top where they benefited other species.

You don't have to be a prophet to see that the days of the spruce are also paid in the bad bruckenau municipal forest.