Landscape genomics is potentially a powerful research field for discovery of genes underlying complex patterns of adaptation in forest ecosystems. The general approach is to search for associations between genetic variation in tree populations and environmental variation in the habitats these trees occupy.
Further reading - Ćalić, I., Bussotti, F., Martínez-García, P.J. et al. Tree Genetics & Genomes (2016) 12: 3. doi:10.1007/s11295-015-0960-0