The aim of the conversion is to make the forests more climate-resistant. "The aim of the Berlin Forestry Department's forest development is to create stable, vital, mixed and structured forests made up of native tree species and to reduce the number of fire- and storm-prone pine forests," explained the environmental administration. The planting took place as part of the mixed forest program. Since 2012, the environmental administration has been regularly planting young, native deciduous trees - more than four million trees have been planted since then. Over time, the aim is to create a mixed forest in which the deciduous trees reproduce themselves.