Asadi, F., & Bagheri, R. (1999). Investigation on poplar cultivated area change by aerial photographs and land control. Iranian Journal of Forest and Poplar Research, 3(1), 89-108.
Asadi, F., Noori, F., & Yousefi, B. (2015). Growth variations in poplar (Populus nigra L.) plantations in riverbanks of Kermanshah Province. Iranian Journal of Forest and Poplar Research, 23(2), 209-221.
Asadi, F., Espahbodi, K., & Sadati, S.E. (2019). Evaluation of technical defects of poplar farmings in Mazandaran province. Iranian Journal of Forest, 11(3), 401-414.
Bagheri, R., Modir-Rahmati, A., Nomeirian, M., & Zobeiri, M. (2001). Qualitative, Quantitative Study of Zanjanroud Region Poplar Plantations.). Iranian Journal of Forest and Poplar Research, 7, 35-36.
Benomar, L., Des Rochers, A., & Larocque, G.R. (2012). The effects of spacing on growth, morphology and biomass production and allocation in two hybrid poplar clones - growing in the boreal region of Canada. Trees, 26(3), 939-949.
Eslam Doost, J., Sohrabi, H., Hosaini, S.M. & Moradi, Z. (2015). Evaluation of different methods of determining the coefficient of shape to estimate the volume of planted Populus trees (Galadeh area-Mazandaran province). Journal of Applied Ecology, 4(12), 67-76.
Faal-Khah, I., Ramezan Kakroudi, E., Alijanpour, A., & Banch Shafiei, A. (2016). The effect of spacing on quantitative and qualitative characteristics of black poplar (Populus nigra L.). Journal of Forest Research and Development, 2(4), 337-351.
FAO (2012). Poplar and willows sustainable livelihoods and rural development. International Poplar Commission, 24th session Dehradun, India, 226pp.
FAO (2016). Poplar and other fast growing trees renewable resources for future green economics. International Poplar Commission, 25th session Berlin, Germany, 106pp.
Gagnon, D., Fortier, J., Truax, B., & Lambert, F. (2012). High yield and carbon storage in 9- year-old hybrid poplar riparian buffers in southeastern Canada. 24th Session of International Poplar Commission, 30 Oct-Nov 2012, India, Dehradun, 228p.
Ghasemi, R., & Modirrahmati, A. (2003). Experiment of adaptation & study of poplar (closed crown colonies) different colonies wood production level in Karaj region. Periodical of Iran's Forest & Poplar Researches, 11(3),359-390.
Ghasemi, R. (2008). Final report of the research project on the adaptation of suitable clones in the Karaj region. Research Institute of Forests and Rangelands of Iran, 75 pp.
Hanafi, A., & Hatami, I. (2013). Preparation of Kurdistan province climate map using geographic information systems. Quarterly Journal of Geographic Information Technology Sepehr, 22, 28-24.
Heshmatol Vaezin, S.M., Khezriyan, B., Namiranian, M., Hajjarian, M., Janat Babaii, M., & Shaykhkanlooy Milan, M. (2020). Determining the economically optimal planting interval, planting pattern and rotation age for high-yielding black poplar (Populus nigra L.) clones in West Azerbaijan province, Iran. Iranian Journal of Forest, 129(2), 233-256.
Hemmati, A., & Modir-Rahmati, A.R. (2002). Results of adaptation trial for high yielding poplar clones in west of Kermanshah's paper industries. Iranian Journal of Forest and Poplar Research, 8, 59-86.
Hemmati, A., & Modir-Rahmati, A.R. (2005). Effects of spacing on yield of various clones of Populus nigra (L.). Iranian Journal of Forest and Poplar Research, 13, 343-352.
Jahanpour, F., Badehian, Z., & Soosani, J. (2019). Investigating the efficiency of the carbon sequestration in above-ground biomass of some populous clones. Iranian Journal of Forest, 11(2), 195-205.
Kazemi Najafi, S., Sadaty, S.A., & Ebrahimi, A. (2012). The effect of planting and planting distance on tensile stress in spruce trees. Forest and Products of Wood (Natural Resources of Iran), 65(2), 187-197.
Marcel, V., & Oscar, F. (2000). History of the International Poplar commission (IPC), FAO United Nation. Rome, Italy.
Modir-Rahmati, A.R. (2016). The development of wood farming is inevitable and vital to the country. Publications of the Institute of Forestry and Rangelands of Iran. Nature of Iran Journal, 1(1), 14-21.
Noori, F., Asadi, F., & Modir - Rahmati, A.R. (2010). Growth and wood production of 10 poplar clones (Populus nigra) at the second harvesting period in Kermanshah. Iranian Journal of Forest and Poplar Research, 17(4), 534-543.
Organization of Management and Planning of Kurdistan Province (OMPK). (2018). Statistical Journal of Kurdistan Province, 2017. First volume (land and climate), second (population), seventh (industry), and tenth (commercial and hotel),308 pp.
Ozcelik, R., & Eler, U. (2009). Effects of release cutting on the development of young natural Lebanon cedar (Cedrus libani A. Rich) stands of western Mediterranean region of Turkey. Journal of Environmental Biology, 30(2), 179-182.
Ragauskas, A., Williams, C.K., Davison, B., Britovsek, G., Cairney, J., Eckert, C.A., Frederick, - WJ., Hallett, J., Leak, D.J., Liotta, C.L., Meilenz, J.R., Murphy, R., Templer, R., & Tschaplinksi, T. (2006). The path forward for biofuels and biomaterials. Science, 311, 484– 489.
Rowland, D.L., Biagini, B., & Evans, A.S. (2000). Variability among five riparian cottonwood (Populus fremontii Wats.) populations: An examination of size, density, and spatial distribution. Western North American Naturalist, 60(4), 384-393.
Sabeti, H. (1994). Forests, trees and shrubs of Iran. University of Yazd, Yazd, I.R. Iran, 810 pp.
Salari, A. (1999). The final report of the research project on the adaptation of suitable poplar clones in West Azarbaijan. Research Institute of Forest and Rangelands, 78 pp.
Sharifi, M. (2015). Detailed results of agricultural census in Kurdistan province. Organization of Management and Planning of Kurdistan Province. 101 pp.
Sobhani Fard, Y. (2018). Advanced statistical analysis. University Press of Imam Sadegh. second edition, 426 pp.
Soheili Esfahani, S., & Fallah, A. (2014). Quantitative and qualitative characteristics of Populus alba L.) and Populus nigra L. trees in hand-planted stands in the west of Isfahan province. Journal of Forests and Wood Products, Iranian Journal of Natural Resources, 7(1), 244-233.
Tunctaner, K., & Ozel, H.B. (2008). Adaptation of some poplar clones to the lake district in Turkey. SUD Orman Fakultesi Dergisi, 1, 61 – 67.
Yemshanov, D., & McKenney, D. (2008). Fast-growing polar plantations as a bioenergy supply source for Canada. Biomass Bioenergy, 32, 185–197.
Valizadeh, M., & Moghaddam, M. (1994). Experimental plans in agriculture. Pishtaz e Elm Publications, Tabriz, 350 pages.
Yousefi, B. (2009). Poplar; botany, importance, agriculture and its development plan. Agricultural Research Center and Natural Resources of Kurdistan. 29 pp.
Yousefi, B., & Modir-Rahmati, A. (2011). Survey on adaptation and wood yield of Populus nigra clones in comparative populetum of Sanandaj (final stage). Iranian Journal of Forest and Poplar Research, 19(3), 283-299.
Yousefi, B., Kalagari, M., & Mardani, F. (2020a). Investigation of poplar plantations in different regions of the country - first phase (Kurdistan province). Research Institute of Forest and Rangeland (RIFR), No, 6723.
Yousefi, B., Haydari, M., & Vafaei, S. (2020b). Survey of distribution and surveying of poplar cultivations in the country using Sentinel 2 satellite data - First phase (Kurdistan province). Research Institute of Forest and Rangeland (RIFR), No, 6794.