One of the challenges is that the average number of tree species in each square kilometre of forest could be reduced by 33 to 49 per cent as a result of dieback caused by climate change. If this were to happen the range of European tree species suitable for future reforestation would be very limited, and there could be shortages of supply. So what does that mean for the forest of the future?
The objective: healthy mixed woodland
Forests containing climate-resilient tree species are particularly beneficial, as the mix of deciduous and coniferous trees ensures long-term forest productivity. This can have a positive impact on the microclimate and soil functions. In some cases, species can even help each other grow better. These types of beneficial compositions can be achieved through targeted measures when planting, cultivating and clearing.
To create a sustainable mixed forest, tree species are selected for their ability to cope with current and future climate conditions. Looking at regions where the expected future climate conditions are already prevalent is a good way to identify suitable tree species.
Economic efficiency in forest restoration
To ensure that trees are both climate-resilient and economically productive, high-productivity species such as red oak, Douglas fir and acacia should be introduced during forest restoration. However, foresters are still often deliberately opting for less-productive tree species, because they are limiting themselves to those native species which are declining in number.
To proactively drive forest restoration forward, the timber industry is working closely with science and research. This has led to the use of advanced remote sensing data, consistent monitoring, AI and expert assessment.
Satellite-generated mapping is used for early detection of vulnerable areas, for example. This process marks which trees are healthy and where there is deadwood.