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The temperate, humid climate and nutrient-rich soils in the pre-alpine areas of southern Bavaria represent conditions where European beech and Norway spruce come out with rather equal above ground biomass production when cultivated in pure stands. In order to reveal the effect of mixture we established 37 experimental plots in even-aged pure and mixed(More)
Mixing of complementary tree species may increase stand productivity, mitigate the effects of drought and other risks, and pave the way to forest production systems which may be more resource-use efficient and stable in the face of climate change. However, systematic empirical studies on mixing effects are still missing for many commercially important and(More)
Forest ecosystems have been exposed to climate change for more than 100 years, whereas the consequences on forest growth remain elusive. Based on the oldest existing experimental forest plots in Central Europe, we show that, currently, the dominant tree species Norway spruce and European beech exhibit significantly faster tree growth (+32 to 77%), stand(More)
An increasing number of studies provide evidence that mixed-species stands can overyield monocultures. But it is still hardly understood, how the overyielding at the stand level emerges from the tree, canopy, and size structure. Analyses of 42 triplets with 126 mixed and mono-specific plots in middle-aged, two-species stands of Scots pine (Pinus sylvestris(More)
Root trenching of Norway spruce and European beech caused no long-term decrease of stem growth and only temporal growth reductions in European beech. Root volume reduction is a common occurrence in silvicultural, urban, and scientific environments, often the direct result of trenching applications. Although this interference is widespread near forest roads(More)
By using a growth model, a simulation study was done to detect differing transpiration sums of an evergreen and a deciduous tree species within a mixed stand. The dependence of summer drought and transpiration on tree size and species, and the relationship of water use efficiency and tree growth was analyzed. The process-based growth model BALANCE was used(More)
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