His research centres on the genetics, ecology, and silviculture of South-East European forests, with particular emphasis on the development of high-productivity stands, the breeding and conservation of forest tree species, and the phytogeography of Balkan flora. His scientific record comprises more than 250 publications, including major monographs on coniferous forests and forest genetics, as well as authoritative taxonomic treatments of Aesculus hippocastanum, Pinus peuce, and Acer heldreichii in Enzyklopädie der Holzgewächse. With approximately 1,200 citations, his work has contributed to both scientific research and forest policy, including through his 2015 assessment of Bulgaria’s forest genetic resources. His expertise has also informed international work on the conservation and sustainable use of forest genetic resources.   Beyond his academic career, he has contributed to public administration at the highest level, serving as Minister of Environment in 1990. His career reflects a sustained integration of scientific research, forest resource conservation, and public policy in support of the sustainable stewardship of natural resources.