Starke Versauerung der Waldböden Berlins

Grenzius, Ralf

doi:10.1007/bf02744222

Cited by 27 publications

(6 citation statements)

References 2 publications

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“…Unfortunately, most samplings have been restricted to the forest floor (Ao horizon). However, there are investigations made in Europe demonstrating that the humus as well as the mineral soil layers have become more acid over periods of 12 to 30 years (Butzke, 1981;Wittmann & Fetzer, 1982;Evers, 1983;Reichmann & Streitz, 1983;Glatzel et al, 1984;Grenzius, 1984). Von Zezschwitz (1982) found a pH decrease over a four-year period in Sauerland, Germany.…”

Section: Introductionmentioning

confidence: 94%

Changes in soil acidity from 1927 to 1982–1984 in a forest area of south‐west Sweden

Hallbäcken

Tamm

1986

Scandinavian Journal of Forest Research

249

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Reinvestigation of 90 soil profiles sampled for pH measurements in 1927 revealed a general decrease in pH with 0.3-0.9 units (measured electrometrically on field-moist samples in water with the same ratio soil/water on both occasions). All soil horizons (A 0 , A 2 , B and the subsoil, C, at 70 cm depth) had become more acid beneath all types of canopy (beech, oak, spruce planted during different periods), but the spruce stands were on average more acid than the hardwoods. In the upper soil horizons (A o and A 2 ), old spruce stands were more acid than the young ones at both samplings, but this effect was small in the B horizon and absent in the C horizon. While the tree species effect and age effect in the spruce stands may be called biological acidification, the acidification of deeper horizons, now often below pH 4.5 and in the aluminium buffer range, seems difficult to explain without assuming an influence of acid deposition.

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Section: Introductionmentioning

confidence: 94%

Changes in soil acidity from 1927 to 1982–1984 in a forest area of south‐west Sweden

Hallbäcken

Tamm

1986

Scandinavian Journal of Forest Research

249

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“…Studies from central Europe parallels this trend to some extent in having greatest pH drops in soils of originally high pH and small changes in the originally most acidic soils (e.g. Grenzius 1984, Riebling and Schaefer 1984, Glatzel et al 1985; for a review see Abrahamsen 1987). Dahl (1988) and Falkengren-Grerup (1986) found a general pH drop in soils with original pH > 4 similar to the pattern found in my study (Fig.…”

Section: Soil Analysesmentioning

confidence: 87%

Changes in forest soils and vegetation in Søgne, southern Norway, during a 20 year period

Bjørnstad

1991

Ecography

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An investigation of the edaphic conditions and the vegetation of 21 fixed plots in Søgne municipality, Vest‐Agder, South Norway was carried out in 1967‐69 and 1987. Loss on ignition, pH, total nitrogen, total exchangeable bases, base saturation, exchangeable hydrogen, sodium, potassium, magnesium, calcium and manganese was analysed. The species composition of vascular plants was investigated. The total cover of the bottom layer was scored. The soil pH had decreased in the more basic soils but had increased in the more acidic soils. The organic content had increased and base saturation had decreased in most samples. Na+ had increased in more than half of the plots, Ca2+ and Mg2+ had not changed, and K+ and Mn2+ had decreased in most plots. Salt depositions from the neighbouring North Sea and leaching from the soil accounted for these changes. In many of the parameters opposite changes were found in the poorer soils compared to the richer soils. In the field layer Deschampsia flexuosa, Convallaria majalis had increased, and Oxalis acetocella, Galium odoratum had decreased. The cover of cryptogams had decreased in most of the plots.

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“…For a long time, substrates in cities were regarded by pedologists as heterogenous and too young to develop into soils. Pedological studies in cities were not started before the 1970s and include Perth (Andrews 1971), Berlin (Runge 1975, Grenzius & Blume 1983, Washington (Smith 1976), and Halle (Billwitz & Breuste 1980). Recommendations for soil mapping in cities were published by Blume et al (1989) and Burghardt et al (1997).…”

Section: Environmental Conditionsmentioning

confidence: 99%

On the Early History of Urban Ecology in Europe

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Sukopp H. (2002): On the early history of urban ecology in Europe. Praha, Early investigations on the ecology of cities were in the tradition of natural history and focused on single biotopes. Of special interest were the plants and animals introduced into new areas directly or indirectly by man. In Central Europe, studies of anthropogenic plant migrations and cultural history were combined in a specific way, the so called Thellungian paradigm. The succession of vegetation on ruins after the bombing during the Second World War was studied in many cities. Ecological studies on whole cities started in the 1970s with investigations on energy flow and nutrient cycling. Today the term urban ecology is used in two different ways: in developing programs for sustainable cities, and in investigation of living organisms in relation to their environment in towns and cities.K e y w o r d s : urban flora and vegetation, human impact, ecological studies, Thellungian paradigm

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Starke Versauerung der Waldböden Berlins

Cited by 27 publications

References 2 publications

Changes in soil acidity from 1927 to 1982–1984 in a forest area of south‐west Sweden

Changes in soil acidity from 1927 to 1982–1984 in a forest area of south‐west Sweden

Changes in forest soils and vegetation in Søgne, southern Norway, during a 20 year period

On the Early History of Urban Ecology in Europe

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