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The role of light climate and leaf area development for canopy-water and CO2 fluxes along a gradient of tree species and structure in the Steigerwald
BITÖK-A 1From 01/1998 to 12/2000
Principal Investigator: John Tenhunen
Staff: Stefan Fleck, Barbara Köstner, Markus Schmidt
Grant: 0339476 C Grundlagen zur nachhaltigen Entwicklung von Ökosystemen bei veränderter Umwelt
Mixed forests of beech and spruce and of beech and oak (and pine) are, after pure coniferous forests, the predominant forest types in northern Bavaria and large parts of Central Europe. Structural and physiological heterogeneity in such mixed forests call for new synthetic models to analyse their function and to allow scaling up from single trees to forest stands. Models used up to now do not account for these complexities as only single species stands have been considered.
The aim is to develop a model for mixed species stands in order to analyse the effects of different stand structures and species composition on fluxes of water and CO2. This model will have the same structure as STANDFLUX and will be based on extensive measurements of physiological and structural parameters, investigated in the following parts of the project:
1. Structure and composition of mixed forests in northern Bavaria
2. Tree physiology of beech and oak, extending measurements made on spruce during the previous project period
3. Synthesis of the above parts to the mixed stand model and its parameterisation; application of the model to stands in northern Bavaria. This will be a main part in the later phase of the project.
List of publications of this Project
|Köstner, B; Tenhunen, JD; Alsheimer, M; Wedler, M; Scharfenberg, HJ; Zimmermann, R; Falge, E; Joss, U: Controls on evapotranspiration in a spruce forest catchment of the Fichtelgebirge in Beck E., Bendix J, Kottke I, Makeschin F, Mosandl R,: Ecological Studies, Springer Verlag, 147, 377-415 (2001)|
|Tenhunen, JD; Falge, E; Ryel, RJ; Manderscheid, B; Peters, K; Ostendorf, B; Joss, U; Lischeid, G: Modelling of fluxes in a spruce forest catchment of the Fichtelgebirge in Beck E., Bendix J, Kottke I, Makeschin F, Mosandl R,: Ecological Studies, Springer Verlag, 147, 417-462 (2001)|
|Schäfer, KVR; Oren, R; Tenhunen, JD: The effect of tree height on crown level stomatal conductance, Plant, Cell and Environment, 23, 365-375 (2000) -- Details|