Lars Sprengel

Georg-August-Universität Göttingen | GAUG · Department of Silviculture and Forest Ecology of the Temperate Zones

The carbon sequestration potential of forest ecosystems is expected to play a crucial role in mitigating global warming, depending on how climate change will affect tree growth under various local environmental conditions. Here, we investigated the climatic limiting factors for forest tree growth and future carbon sequestration potential for eight...

For constructing growth and yield models the concept of site index as measure of productivity is crucial. Here, we use nonlinear mixed-effects models (NLME) with random individual effects and nonlinear models with dummy variables as fixed individual effects (NLFE) to fit mechanistic growth functions to stem analysis data of the economically most im...

A dendroclimatological approach was used to analyze growth responses of the tree species Pinus tabuliformis Carr., Larix gmelinii Rupr., Picea asperata Mast. and Quercus mongolica Fisch. ex Ledeb. in a region of temperate climate in Northeast China. Annual radial increment (ARI) measurements from stem cross-sections were used to identify the effect...

Forests are a large carbon sink with an additional substitution effect in the merchantable timber compartment of harvested trees, where carbon stored within the same volume of wood varies depending on wood density. Here, we investigated mean annual air-dry wood density variations depending on cambial age, annual radial increment, and two different...

Recent trends in climate change and future predictions of increasing carbon emissions and rising temperature have drawn a general focus towards the topic of carbon storage and the enlargement of carbon sinks. Forest ecosystems of the world are one of the largest carbon sinks and play therefore an important role for global carbon storage. However, s...

Intensive artificial pruning of trees increases the proportion of high-value timber but simultaneously reduces the crown and consequently the capacity to assimilate photosynthates. Here, midterm effects of two intensive pruning treatments, a classical and a selective approach, on radial growth dynamics at different stem heights is comparatively ana...