HR: 17:25h
AN: B24A-04    [Abstracts]
TI: Implementation of a forest management module into BIOME-BGC and its application
AU: * Jochheim, H
EM: hjochheim@zalf.de
AF: Leibniz-Centre for Agricultural Landscape Research (ZALF), Institute of Landscape Systems Analysis, Eberswalder Str. 84, Muencheberg, 15374, Germany
AU: Puhlmann, M
EM: martina.puhlmann@zalf.de
AF: Leibniz-Centre for Agricultural Landscape Research (ZALF), Institute of Landscape Systems Analysis, Eberswalder Str. 84, Muencheberg, 15374, Germany
AU: Pohle, D
EM: dirk.pohle@zalf.de
AF: Leibniz-Centre for Agricultural Landscape Research (ZALF), Institute of Landscape Systems Analysis, Eberswalder Str. 84, Muencheberg, 15374, Germany
AB: The wood export from forest ecosystems by management measures causes nutrient losses, and is consequently accompanied by a substantial impact on the sustainability of forest ecosystems. Thus, for simulation studies on managed forests, the effects of wood export have to be taken into account. The original BIOME-BGC model (Vers. 4.2; Running & Coughlan 1988, Running & Gower 1991, Running & Hunt 1993, Thornton et al. 2002) is designed for the simulation of natural, but not managed terrestrial ecosystems. We developed an approach for a management module within BIOME-BGC with the following features: 1) thinning and clear-cut with the options of varying length of thinning and rotation periods, 2) alternatively use of tables or functions (depending on stand age and stem biomass) for determining the thinning fraction, that can be derived from yield tables, 3) use of age-dependent biomass expansion functions for determining the exported wood fraction during harvest, 4) planting routine with the options of changing tree species and defining biomass of planted trees. The presentation describes the concept of the implemented management module and shows simulation results on the effects of different forest management options (length of thinning or rotation period, harvest intensity, tree species change) on the carbon, nitrogen, and water budgets.
DE: 0428 Carbon cycling (4806)
DE: 0429 Climate dynamics (1620)
DE: 0439 Ecosystems, structure and dynamics (4815)
DE: 0466 Modeling
SC: Biogeosciences [B]
MN: 2007 Joint Assembly