The Kreinitz experiment was established in 2005 to study the effect of tree species diversity on productivity and belowground processes.
The experiment consists of 2 blocks that contain 49 plots each. All possible 1, 2, 3, 5, and 6 species combinations were planted, and a control plot without trees was added. The plots are randomly distributed within each block. In a plot, 30 trees were planted on rows (1 m between rows, 0.8 m between trees in a row); the different species were distributed randomly within a plot. Two exclosures of stainless steel were installed in every plot to exclude tree roots and mycorrhiza.
|2 blocks with 49 plots each||a plot with 30 trees planted on rows|
|former land use||arable field until 1990s, abandoned till 2005|
|soil type||humic cambisol on a bedrock of sand and gravel|
|no of plots||98|
|plot size||5 m x 5 m|
|no of trees planted||2 880|
|planting date||fall 2005|
|diversity variables||species richness
|diversity gradient||0, 1, 2, 3, 5, 6 sp.
|size species pool||6|
|species pool||Fagus sylvatica, Fraxinus excelsior, Picea abies, Pinus sylvestris, Quercus petraea, Tilia cordata|
|contact person||Harald Auge|
The first research goal is determining how tree species and functional diversity affect stand productivity, matter cycling, and the diversity and abundance of, e.g., herbivores, pathogens, decomposers, and mycorrhizal fungi. The research further focuses on the after-life effects of tree diversity: how does leaf litter diversity and composition affect decomposition rate and the diversity and abundance of decomposer invertebrates and microbes.
Send an e-mail to the contact person or explore the publications:
|The Kreinitz plantation in 2008 and 2013|