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View Full Version : Pollution means dark future for Germany's Black Forest



Mac Seafraidh
Friday, January 7th, 2005, 11:17 PM
FREIBURG-IM-BREISAU, Germany : Klaus von Wilpert points to a stand of spruce trees in the middle of the plantation. For him, it typifies the gradual decline of the Black Forest, one of Germany's biggest tourist draws.

"That's the most visible effect of pollution. The trees began yellowing in autumn and have progressively lost their needles," says the researcher from the German FVA forestry office, which supervises the Black Forest. The agriculture ministry also acknowledges the problem has become acute. In a report this month, it said that Germany's woodlands have never been in such bad shape. One in four trees is damaged, and the number of those worst hit has increased by eight percent over the last year, the report said.

The development is particularly disturbing in the Black Forest, which is considered to be 40 percent "damaged", the worst attrition rate since 1983. The number of unhealthy trees in this southwest corner of Germany near the French border has risen by 10 percent over 2003, due in part to a drought last year whose effects are being felt with some delay. "You can't just turn a blind eye. The Black Forest has been historically weakened, above all here on the western edges where the wind brings in pollutants from the Rhine valley," says Wilpert.

With a turn of the breeze, the soil can be contaminated with nitrates, ammonium, nitrogen and acids from industry and traffic in the valley. Pollution's first victims are the spruce and beech, shallow rooted trees which absorb elements closer to the surface of the soil. The problem is even more pronounced on the other side of Germany, where waste from heavy industry in Poland and the Czech Republic wafts over woodland.

While the FVA is singling out the Rhine river basin here, it does admit some responsibility for the problems by having planted trees from 1950-1970 that were not well adapted to the environment. "The spruce grows quickly. We made the error of wanting to rapidly grow wood for cutting," the researcher says, gesturing to a clutch of trees some 10 metres (30 feet) taller than nearby pines planted at the same time. "But it's a fragile tree and its needles are acidic and add to the pollution in the streams and ground water."

In the last 20 years, the forestry office has tried to take the upper hand. It has begun spreading magnesium through much of the region to try to neutralise the build-up of acids in the soil. Oak trees, which are more hardy, are also being planted. Now hikers, who are abundant in the area for much of the year, can see some nice wooded clusters. "It's reassuring, but the pollution is still on the rise even if it appears to be invisible," says Wilpert.

The FVA also has harsh words for some of those who frequent the forest. Off-road motorcyles and quad bikes abound and their ever-compacting tracks means that rain water runs off rather than seeps into the ground, lowering the water table. This decline in ground water is considered "without doubt the biggest challenge at the moment." Hikers can still see a few deer. But meanwhile the soil is losing micro-organisms," says the researcher.

"The problem is that these invisible organisms play a key role in filtering pollutants. And if the water is polluted, the tourists will soon have no more deer to see."


Source: Channel News Asia (http://www.channelnewsasia.com/stories/afp_world/view/123794/1/.html)