#00071
Plant experimental forest "gardens" combining local and non-local tree species and seed provenances to study which ones adapt to future climate conditions. The work is run as a long-term research program by the ONF under the name RENEssences, with plots distributed across French regions including the Grand Est.
Multi-decade species trials produce reliable data only after 20–40 years, but many forests are dying now. There is no mechanism to give foresters actionable guidance on the timescale at which they actually need to make replanting decisions.