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Linnebjer—a south swedish oak forest and meadow area—revisited after half a century

Andersson, Folke and Nihlgård, Bengt (2016). Linnebjer—a south swedish oak forest and meadow area—revisited after half a century. Open journal of ecology. 6:2, 74-83
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Abstract

An oak forest and three wet meadows/fens were reinvestigated after 50 years concerning tree vitality,biomass and productivity, and soil chemistry. Sulphur and nitrogen deposition has changeddramatically during these years, and the aim was to analyse the differences in both the oak forestand the open field ecosystems. Trees were re-measured and soil profiles were resampled. Importantvisible changes in the oak forest were stated concerning the vitality of oaks. Abovegroundthere was a decrease in tree biomass, production and litter fall, but a huge increase in standingdead logs. During the years, the deposition of sulphur had decreased drastically, but nitrogendeposition was still high. Soil acidification in the forest had decreased, reflected in an increasedbase saturation in the forest, in spite of slightly lowered pH-values. Strongly increased amounts ofexchangeable Ca and Mg now appeared in the forest soil, and a substantial transport of calciumand magnesium had obviously taken place from the forest soil to the meadow and fens during theyears. However, the most important soil change was the accumulation of organic matter. The increasedaccumulation of organic matter in turn meant increased amounts of colloid particles andmicrosites for ion exchange in the soil. This favoured 2-valence base cations, and especially Ca andMg that increased very much in all the studied ecosystems. Carbon as well as nitrogen had stronglyincreased in the forest, meadow and fen soils. This was interpreted as a natural result of increasedvegetation growth due to high nitrogen deposition, increased global annual temperature and increasedcarbon dioxide concentration in air. It was concluded that the decreased deposition ofsulphur had have a positive effect on soil chemistry, and that the deposition of nitrogen probablyhad stimulated vegetation growth in general, and contributed to increased amount of organicmatter in the soils. However, in this studied oak forest, the decreased vitality and many killedtrees were also suspected to be a result of high nitrogen deposition. Obviously increased treegrowth was counteracted by decreased stress resistance, and increased appearance of pathogensin the oak trees.

Authors/Creators:Andersson, Folke and Nihlgård, Bengt
Title:Linnebjer—a south swedish oak forest and meadow area—revisited after half a century
Series/Journal:Open journal of ecology (2162-1993)
Year of publishing :2016
Depositing date:17 November 2016
Volume:6
Number:2
Page range:74-83
Number of Pages:10
Publisher:Scientific Research Publishing
ISSN:2162-1993
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:K Forestry > K70 Forest injuries and protection
P Natural resources > P33 Soil chemistry and physics
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:Quercus robur, soil pH, acidification, forest soils, carbon, nitrogen
Keywords:Oak Disease, Tree Vitality, Deposition of S and N, Soil Acidification, Soil C and N Accumulation, Increased Amounts of Ca and Mg
URN:NBN:urn:nbn:se:slu:epsilon-e-3789
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3789
Additional ID:
Type of IDID
DOI10.4236/oje.2016.62008
ID Code:13835
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:17 Nov 2016 10:39
Metadata Last Modified:17 Nov 2016 11:16

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