Natural Changes in Stand Structure in the Permanent plot of Hyrcanian forests (North of Iran)
Paper Details
Natural Changes in Stand Structure in the Permanent plot of Hyrcanian forests (North of Iran)
Abstract
This research was aimed to investigate natural changes in stand structure of Hyrcanian forests. Forest structure, proportion of dead wood, and proportion of tree species were studied in 2006 and 2012. Results of the inventory of total 2375 trees in 2012, showed 3 layers and uneven-aged structure in a forest type of Fagus orientalis-Carpinus betulus. Other results are as following: mean tree number 389 ha-1, mean basal area 43 m2ha-1, mean stand volume 538 m3ha-1, and De’ Liocourt factor is 1.38. Dead trees were counted about 3.1% of the tree number and 5.7% of the stand volume. Comparison of the two inventories showed that beech trees are gaining more proportion among the tree species in almost all diameter classes, while hornbeam is losing more presence in the diameter classes. In DBH classes lower than 30 cm the proportion difference between beech and hornbeam is more obvious. Volume of damaged trees (broken, hollow, snag and log) was counted about 97 m3ha-1; while for dead woods was 30.6 m3ha-1. Within the six years of study, the hollow large trees have been fallen down. Dying of trees in DBH classes of lower than 50 cm provides a lot of scattered small gaps within the stand and caused establishment of younger individuals and cohorts. Almost 9.6 m3ha-1, comprising 1.6% of total volume, 28% of dead tree and 8.9% of damaged trees, was decomposed. In general view this forest is tending from the senility to juvenility in forest succession.
Akbari F. 2010. Investigation of quality and quantity dead trees in unmanaged forest, M.S.c. Guilan University, 89 p.
Amanzadeh B, Saghebtalebi KH, Foumani BS, Fadaie F, Camareo JJ, Linares JC. 2013. Spatial distribution and volume of dead wood in unmanaged Caspian beech (Fagus orientalis) forests from northern Iran, Forests 4(4), 751-765.
Amanzadeh B, Sagheb-Talebi KH, Foumani BS, Fadaie F, Camarero JJ, Linares JC. Amini M. 2006. Monitoring the forest dynamic in permanent sample plot in Neka-Zalem Rud forest project. Final Report phase1, Research Institute of Forests and Rangelands.
Amini M. 2012. Monitoring the forest dynamic in permanent sample plot in Nekazalem Rud forest project. Final Report phase 2, Research Institute of Forests and Rangelands.
Amini M, Saghebtalebi KH, Khorankeh S, Amini R. 2010. Description of some silvicultural characteristics in a mixed Beech – Hornbeam forest. Iranian Journal of Forest and Poplar Research 18(1), 21-34.
Amini M. 2001. Methods of comparison and considering the uneven aged forest stands structure (on the basis of trees number distribution in diameter classes, Pajoohesh va Sazandegi 50(1), 4-13.
Amiri M, Rahmani R, Saghebtalebi KH, Habashi H. 2013. Dynamics of structural characteristics of a natural unlogged oriental beech (Fagus orientalis Lipsky) stand in ShastKalate Forest, North of Iran. The International Journal of Environmental Resources Research, Gorgan 1(2), 107-113.
Amiri M, Rahmani R, Saghebtalebi KH, Habashi H. 2015. Structural characteristics of dead Wood in a natural untouched of Fagus orientalis Lipsky mixed stand forest. Journal of Wood and Forest Science and Technology 22(1), 185-205. of Wood & Forest Science and Technology.
Anonymous. 1969. Neka zalem rud forest project section 5. Forest and Rangelands Organization, 185 p.
Anonymous. 1986. Volume tables of the Beech trees. Forest and Rangelands Organization, 320 p.
Anonymous. 1994. Neka zalem rud forest project section5. Forest and Rangelands Organization, 241p.
Bayat M, Namiranian M, Zobeiry M. 2014a. Modeling the volume, height and wood production for Beech trees on the basis of volume and tree number in a 9 period of Kheyrud kenar, Iranian Journal of Natural Resources 67(3), 423-435.
Bayat M, Namiranian M, Zobeiry M, Fathi J. 2014b. Determining the growing volume and number of trees in the forest using permanent sample plots, Iranian Journal of Forest and Poplar Research 21(3), 424-438.
Daneshvar A, Rahmani R, Monfared SH. 2008. Review of the researches in Shast kola permanent plot of Gorgan, Journal of Conservation and Utilization of Natural Resources 1(2), 55-65.
Habashi H. 1997. Investigation the importance of dead trees in Vaz Mazandaran, M.S, Tarbiat modares university, 127 p.
Habashi H, Hosseini SM, Mohammadi J, Rahmani R. 2007. Stand structure and spatial pattern of trees in mixed Hyrcanian Beech forests of Iran, Iranian Journal of Forest and Poplar Research 15(1), 55-64.
Kakavand M, Marvimohajer MR, Saghebtalebi KH, Sefidi K. 2015. Forest stand structure and composition in the middle period of succession, Iranian Journal of Natural Resources 68(1), 31-45.
Marvimohajer MR. 2013. Sylviculture, Tehran university, 387 p.
Sefidi K, Marvimohajer MR. 2009. Amount and quality of dead trees (snag and logs) in a mixed beech forest with different management histories, Iranian Journal of Natural Resources 62(2), 191- 202.
Sefidi K, Etemad V. 2014. The amount and quality of dead trees in a mixed beech forest with different management histories in north of Iran. Biodiversities 15(2), 162-168.
Sefidi K, Marvimohajer MR, Zobeiri M, Etemad V. 2007. Standing dead trees (snags) component of the close to nature silviculture in a mixed beech forest in north of Iran, Iranian Journal of Forest and Poplar research 15(4), 365-373.
Sefidi K, Marvimohajer MR, Zobeiri M, Etemad V. 2008. Standing dead trees (snags) component of the close to nature silviculture in a mixed beech carpinus forest, Pajouhesh va Sazandegi 81(4), 50-58.
Tavankar F, Bonyad M, Iranparast A, Bodaghi A. 2013. Effect of snags on the species diversity and frequency of tree natural regeneration in natural forest ecosystems of Guilan Iran, Plant Researches magazine 26(3), 267-280.
Yaghoobiarzefooni H. 2011. Changes in dead trees in a 5 period in permanent sample plot, M.S.c., Gorgan University, 140 p.
Zobeiri M. 2005. Forest inventory, Tehran University. 401 p.
Zolfaghari E. 2003. Ecological and silvicultural investigation on dead trees in Fagetum, M.S.c. Tehran university, 80 p.
M. Amini, K.H. Saghebtalebi, R. Amini, S.H. Amini (2016), Natural Changes in Stand Structure in the Permanent plot of Hyrcanian forests (North of Iran); JBES, V8, N5, May, P62-74
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