Norway Spruce Shows Contrasting Changes in Below- Versus Above-Ground Carbon Partitioning towards the Alpine Treeline: Evidence from a Central European Case Study

作者: Dietrich Hertel , Dorothea Schöling

DOI: 10.1657/1938-4246-43.1.46

关键词: ElevationAbove groundEnvironmental scienceMicroclimateBiomass (ecology)Root systemCarbonEcologyPhysical geographyTransectDry weight

摘要: Abstract The marked change in above-ground forest stand structure with elevation towards the alpine treeline has been widely recognized, while studies on altitudinal effects root system are still scarce. We studied Norway spruce stands along a 700-m-long elevational transect at Mount Brocken (Harz Mountains, central Germany) to test hypothesis that fine dry mass partitioning shows an inverse response compared biomass. Microclimate measurements revealed thermal conditions of closely comparable other sites around world. Above-ground did not differ significantly among lower and mid elevations, but tree height stem biomass decreased strongly upslope. Fine increased by factor nearly two. Annual production was found be highest only 40% than this maximum treeline. Conseque...

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