Second highest and largest low mountain range in Northern Germany

The Solling is a largely forested low mountain range characteristic for Central Europe. About half of the forest area is dominated by beech and spruce forests. Flora and fauna, although typical for the region, are strongly influenced by forestry.

Currently, ecological conversion changes the picture of the Solling. On the plateau of the Upper Solling moors and moorland forests are being recultivated.
As part of the Solling-Vogler Nature Park the Solling is extensively used for recreational purposes. A total of 1,300 hectares in the Nature Park Solling-Vogler are currently designated as nature reserve. An outstanding project in the Solling is the fostering of the pasture landscape and oak forests using feral Heck cattle and Exmoor ponies.

As part of the ecosystem and forest damage research, atmospheric deposition in the Upper Solling has been extensively studied. The airborne emissions originate mainly from eastern and south-eastern directions.

The sampling area covers approx. 52,000 ha and is located mainly in the Upper Solling at altitudes of 350 – 520 metres above sea level.


Sievershausen Forest-dominated catchment area in the Hochsolling region


Common spruce A major primary producer in semi-natural and anthropogenic affected ecosystems.
Beech As the most dominant deciduous tree species in Central Europe, it plays a significant role in most nearly natural and also anthropogenically influenced forest ecosystems up to an altitude of 1100 m.
Roe deer, one-year-old The roe deer is the most common of the larger herbivores (first order-consumer) to be found in the wild in Europe.
Earthworm (Lumbricus terrestris) As an organism living at ground level, it is a major driver of the decomposition of organic material (e.g. plant litter).
Soil Soil is livelihood and biosphere for humans, animals, plants and soil organisms. All the substances brought in are transported, transformed and/or accumulated in the soil.


Metals Eighty percent of all elements on earth are metals
Nonmetals Only eighteen elements in the periodic table
Chlorohydrocarbons Group of organic compounds with at least one covalently bonded chlorine atom
DDT and metabolites Toxic and persistent organochloropesticide
Hexachlorocyclohexane Several isomeric compounds among the group of chlorinated hydrocarbons
Polycyclic Aromatic Hydrocarbons Group of organic compounds with at least three condensed six-membered rings
Per- and polyfluoroalkyl compounds Organic compounds which are fully (per-) or partially (poly-) fluorinated
Stable Isotopes Atoms of one element with different weights
Flame Retardants Flame retardants reduce the flammability of objects
Perchlorate Salts of perchloric acid
Supplementary parameters Additional information for the interpretation of contamination data

Sampling period

1999 - 2019