TY  - JOUR
A1  - Leuschner, Christoph
A1  - Wulf, Monika
A1  - Bäuchler, Patricia
A1  - Hertel, Dietrich
T1  - Soil C and nutrient stores under Scots pine afforestations compared to ancient beech forests in the German Pleistocene - the role of tree species and forest history
JF  - Forest ecology and management
N2  - In the diluvial lowlands of northern Germany, the Netherlands and northern Poland, an estimated similar to 5 Mio ha of Scots pine plantations (Pinus sylvestris) has been established on sandy soil in the last 250 years replacing the former temperate broad-leaved forests after extended periods of cultivation in the Middle Ages. We examined the effect of variable stand continuity of pine plantations (recent vs. ancient: 51-128 vs. >230 years) on the soil organic carbon (SOC) store and soil nutrient capital in comparison to ancient beech forests (>230 years of continuity) which represent the potential natural forest vegetation. Recent and ancient pine stands had c. 75% larger organic layer C stores than ancient beech forests, while the total C stock in the soil (organic layer and mineral soil to 100 cm) was similar to 25% larger in the beech forests due to higher C concentrations in 0-50 cm depth of the mineral soil. The soil stores of N-tot were similar to 50% and the exchangeable Ca, K and Mg pools about three times larger under beech than under the pine stands. Resin-exchangeable P was enriched in the soils under ancient pine stands probably due to manuring in the past. After clear-cut and long cultivation, it may take >230 years of forest presence to restore the greatly reduced mineral soil C and N pools. The C and N sequestration potential of the soils appeared to be particularly small under pine indicating a pronounced tree species (pine vs. beech) effect on soil C and N dynamics. We conclude that, in the face of rising greenhouse gas emissions, the limited soil C and nutrient storage potential of Scots pine plantations on sandy soils needs consideration when selecting suitable tree species for future forestry. (C) 2013 Elsevier B.V. All rights reserved.
KW  - Sandy soil
KW  - Pinus sylvestris
KW  - Fagus sylvatica
KW  - Forest continuity
KW  - Historic land use
KW  - Nitrogen
Y1  - 2013
U6  - https://doi.org/10.1016/j.foreco.2013.08.043
SN  - 0378-1127
SN  - 1872-7042
VL  - 310
IS  - 6
SP  - 405
EP  - 415
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Liang, Wei
A1  - Heinrich, Ingo
A1  - Simard, Sonia
A1  - Helle, Gerhard
A1  - Linan, Isabel Dorado
A1  - Heinken, Thilo
T1  - Climate signals derived from cell anatomy of Scots pine in NE Germany
JF  - Tree physiology
N2  - Tree-ring chronologies of Pinus sylvestris L. from latitudinal and altitudinal limits of the species distribution have been widely used for climate reconstructions, but there are many sites within the temperate climate zone, as is the case in northeastern Germany, at which there is little evidence of a clear climate signal in the chronologies. In this study, we developed long chronologies of several cell structure variables (e. g., average lumen area and cell wall thickness) from P. sylvestris growing in northeastern Germany and investigated the influence of climate on ring widths and cell structure variables. We found significant correlations between cell structure variables and temperature, and between tree-ring width and relative humidity and vapor pressure, respectively, enabling the development of robust reconstructions from temperate sites that have not yet been realized. Moreover, it has been shown that it may not be necessary to detrend chronologies of cell structure variables and thus low-frequency climate signals may be retrieved from longer cell structure chronologies. The relatively extensive resource of archaeological material of P. sylvestris covering approximately the last millennium may now be useful for climate reconstructions in northeastern Germany and other sites in the temperate climate zone.
KW  - cell structure
KW  - dendroclimatology
KW  - Pinus sylvestris
KW  - quantitative wood anatomy
KW  - tree rings
Y1  - 2013
U6  - https://doi.org/10.1093/treephys/tpt059
SN  - 0829-318X
SN  - 1758-4469
VL  - 33
IS  - 8
SP  - 833
EP  - 844
PB  - Oxford Univ. Press
CY  - Oxford
ER  -