Einfluss von Emissionsbelastungen in Waldökosystemen auf die Entwicklung des Feinwurzelsystems von Pinus Silvestris L.

The length density of pine (Pins silvestris L.) fine root systems in different soil layers was measured in pine forest ecosystems at three sandy sites with different pollution levels. In spite of an increased nutrient supply in the soils, the root density at the more heavily polluted sites Rösa and Taura was clearly lower than that at Neuglobsow (background). The Taura site which was predominantly acid polluted showed a very low fine root development in the humus layer and a relatively constant length density of fine roots down to a depth of 55 cm. Differences in soil chemical soil properties, especially in the N saturation of the ecosystems, originating from the different pollution levels, were identified as a cause of the different development of fine root systems.