1. Department of Environment, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
2. Department of Environment and Forest Sciences, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
3. Department of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran, Karaj 999067, Iran
4. Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
5. Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy