Akhavan, R., Sagheb-Talebi, K., Zenner, E.K., Safavimanesh, F., 2012. Spatial patterns in different forest development stages of an intact old-growth Oriental beech forest in the Caspian region of Iran. European Journal of Forest Research 131, 1355-1366.
Alef, K., 1995. Nannipieri, P. Methods in Applied Soil Microbiology and Biotechnology, 1st ed.; Academic Press: London, UK.
Ali-Asgharzad, N., 2006. Laboratory Methods in Soil Biology. Tabriz University Press, Tabriz, First Edition, 522 p. (In Persian)
Alizadeh, T., Matinizadeh, M., Salehi, A., Taheri Abkenar, K., 2016. Alteration of phosphatase activity and physiochemical properties of soil in different development stages in beech stand (case study: Rezvanshahr). Forest and Wood Products 69(3), 453-460. (In Persian)
Amanzadeh, B., 2015. Investigation of stand structure, developmental stages, and ecological characteristics of gaps in the mixed broadleaf forest of Asalem. PhD dissertation. Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, 208 p. (In Persian)
Anderson, J.M., Ingram, J.S., 1994. Tropical soil biology and fertility: a handbook of methods. Soil Science 157(4), 265.
Azaryan, M., Abrari Vajari, K., Amanzadeh, B., 2020. Variability of soil physical, chemical and biological properties in developmental stages of beech (Fagus orientalis Lipsky) forest of Asalem, Gilan Province, Iran. Iranian Journal of Forest and Poplar Research 28(2), 124-136. (In Persian)
Azaryan, M., Abrari Vajari, K., Marcu, M.V., Sadeghi, S.M.M., 2025. Integrating multiscale ecological indicators to assess ecosystem functioning in virgin Hyrcanian beech forests. Frontiers in Forests and Global Change 8, 1726336.
Azaryan, M., Abrari Vajari, K., Amanzadeh, B., Sadeghi, S.M.M., 2026. Vertical and structural-phase controls on soil C: N: P stoichiometry in an old-growth Hyrcanian beech forest. Environmental Monitoring and Assessment 198(5), 552.
Błońska, E., Lasota, J., Prażuch, W., Ilek, A., 2025. Vertical variations in enzymatic activity and C: N: P stoichiometry in forest soils under the influence of different tree species. European Journal of Forest Research 144(1), 83-94.
De Feudis, M., Cardelli, V., Massaccesi, L., Lagomarsino, A., Fornasier, F., Westphalen, D.J., Cocco, S., Corti, G., Agnelli, A., 2017. Influence of altitude on biochemical properties of European beech (Fagus sylvatica L.) forest soils. Forests 8(6), 213.
Deljouei, A., Sadeghi, S.M.M., Abdi, E., Bernhardt-Römermann, M., Pascoe, E.L., Marcantonio, M., 2018. The impact of road disturbance on vegetation and soil properties in a beech stand, Hyrcanian forest. European Journal of Forest Research 137(6), 759-770.
Deljouei, A., Cislaghi, A., Abdi, E., Borz, S.A., Majnounian, B., Hales, T.C., 2023. Implications of hornbeam and beech root systems on slope stability: From field and laboratory measurements to modelling methods. Plant and Soil 483(1), 547-572.
Farzalizadeh, F., Hemmati, K.V., Fallahchai, M.M., Naghdi, R., 2021. Effect of gap area on soil biological and enzymes activity in the beech forests (Case study: district 7, Shenrood, Siyahkal). Forest and Wood Products 74(3), 301-310. (In Persian)
Feng, Y., Chen, R., 2024. Phosphorus cycling as a function of soil microbiome. Global Change Biology 30(12), e17611.
Ghazanshahi, J., 2006. Soil and Plant Analysis. Homa Publication, Tehran, 272 p. (In Persian)
Güner, Ş.T., Çömez, A., 2026. Soil carbon stocks and nutrient stratification differ across age-related development stages of oriental beech forests in northwestern Türkiye. CATENA 264, 109786.
Kianmehr, A., Hojjati, S.M., Kooch, Y., Ghasemi Aghbash, F., 2022. Investigation of litter nutrient dynamics in pure and mixed stands of beech and hornbeam (Darabkola of Mazandaran). Iranian Journal of Forest 14(1), 89-103. (In Persian)
Kooch, Y., Ghorbanzadeh, N., Hajimirzaaghaee, S., Egli, M., 2023. Soil functional indicators in mixed beech forests are clearly species-specific. Journal of Forestry Research 34(4), 1033-1049.
Kooch, Y., Parsapour, M.K., Egli, M., Moghimian, N., 2021. Forest floor and soil properties in different development stages of Oriental beech forests. Applied Soil Ecology 161, 103823.
Korpeľ, Š., 1995. Die Urwälder Der Westkarpaten (The Primeval Forests of the Western Carphatians); Gustav Fischer Verlag: Stuttgart, Germany.
Lang, F., Krüger, J., Amelung, W., Willbold, S., Frossard, E., Bünemann, E.K., Bauhus, J., Nitschke, R., Kandeler, E., Marhan, S., Schulz, S., 2017. Soil phosphorus supply controls P nutrition strategies of beech forest ecosystems in Central Europe. Biogeochemistry 136(1), 5-29.
Lei, J., Cao, Y., Wang, J., Chen, Y., Peng, Y., Shao, Q., Yan, W., 2023. Soil nutrients, enzyme activities, and microbial communities along a chronosequence of Chinese fir plantations in subtropical China. Plants 12(10), 1931.
Margalef, O., Sardans, J., Fernández-Martínez, M., Molowny-Horas, R., Janssens, I.A., Ciais, P., Goll, D., Richter, A., Obersteiner, M., Asensio, D., Penuelas, J., 2017. Global patterns of phosphatase activity in natural soils. Scientific Reports 7(1), 1337.
Mirahmadi, S. B., Mataji, A., Kafaki, S.B., Akhavan, R., 2023. Investigating the structure of the mosaics of developmental phases in mixed oriental Beech virgin forests in northern Iran. Austrian Journal of Forest Science 140(3), 213-238.
Parobeková, Z., Pittner, J., Kucbel, S., Saniga, M., Filípek, M., Sedmáková, D., Vencurik, J., Jaloviar, P., 2018. Structural diversity in a mixed spruce-fir-beech old-growth forest remnant of the Western Carpathians. Forests 9(7), 379.
Peck, J.E., Zenner, E.K., 2019. Common ground among beech forest development stages: Matrix versus stage‐typical live tree structure. Journal of Vegetation Science 30(5), 893-904.
Rahmani, A., Teimouri, M., Matinizade, M., Kalafi Y., Amanzade B., 2016. Evaluation of soil and leaves nutrients concentration of beech (Fagus orientalis Lipsky) in different development stages of a beech stand (Case study: Raze forest, Guilan). Iranian Journal of Forest and Poplar Research 24(2), 323-331. (In Persian)
Sagheb-Talebi, K., 2014. Appropriate characteristics of beech stands for application of close to nature silviculture (selection system). Final Report of National Research Project, Research Institute of Forests and Rangelands, Tehran, 123 p.
Sagheb-Talebi, K., Parhizkar, P., Hassani, M., Amanzadeh, B., Hemmati, A., Khanjani-Shiraz, B., Amini, M., Mohammadnejad Kiasari, Sh., Mirkazemi, S.Z., Karimidoost, A., Maghsoudlou, M.K., Mortazavi, M., Karandeh, M., Delfan Abazari, B., Moghadasi, D., Dastangoo, D., Mashayekh, V., Sayadi Marzdashti., A., 2020. Preliminary results of survey on stand structure in permanent research plots of Hyrcanian intact beech (Fagus orientalis Lipsky) forests. Iranian Journal of Forest and Poplar Research 28(2), 163-179. (In Persian)
Sefidi, K., Marvie Mohadjer, M.R., Etemad, V., Mosandl, R., 2014. Late successional stage dynamics in natural Oriental beech (Fagus orientalis Lipsky) stands in northern Iran (Case study: Gorazbon district of Kheiroud-Kenar experimental forest). Iranian Journal of Forest and Poplar Research 22(2), 270-283. (In Persian)
Sefidi, K., 2023. Comparison of structural complexity index (SCI) in the developmental stages of Hyrcanian mixed beech forests. Iranian Journal of Forest 14(4), 389-405. (In Persian)
Song, B., Razavi, B.S., Pena, R., 2022. Contrasting distribution of enzyme activities in the rhizosphere of European beech and Norway spruce. Frontiers in Plant Science 13, 987112.
Taati, S., Matinzadeh, M., Sagheb Talebi, K., 2016. Impact of gap size and light intensity on activity of soil phosphatase enzyme in Beech stands (case study; control plot: Langa-Kelardasht). Journal of Plant Research 29(3), 532-539. (In Persian)
Tabatabai, M.A., 1994. Soil enzymes. Methods of Soil Analysis: Part 2 Microbiological and Biochemical Properties. 5, 775-833.
Yang, W., Jiang, Y., Zhang, J., Wang, W., Liu, X., Jin, Y., Li, S., Qu, J., Zhu, Y., 2025. Organic materials promote soil phosphorus cycling: Metagenomic analysis. Agronomy 15(7), 1693.
Zhang, W., Qiao, W., Gao, D., Dai, Y., Deng, J., Yang, G., Ren, G., 2018. Relationship between soil nutrient properties and biological activities along a restoration chronosequence of Pinus tabulaeformis plantation forests in the Ziwuling Mountains, China. CATENA 161, 85-95.
