Distribution attributes of natural canopy gaps in the Hyrcanian mixed-oriental beech forests

https://doi.org/10.17221/150/2020-JFSCitation:

Mataji A., Vahedi A.A. (2021): Distribution attributes of natural canopy gaps in the Hyrcanian mixed-oriental beech forests. J. For. Sci., 67: 367–375.

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One of the most important issues indicating the quality and quantity of forest ecosystems is the distribution of natural disturbances resulting in canopy gaps (CGs). The present study was conducted in one of the Hyrcanian beech forests in northern Iran in summer 2018. The gap areas were classified into small (< 200 m2), medium (200‒500 m2) and large gaps (500–1 000 m2) on the basis of full inventory. The univariate Ripley’s L-function was used for introducing the CG spatial pattern. Furthermore, mark correlation function (MCF) and density function (DC) in turns were used for verifying the correlation and frequency of CG size classes in each pattern. The results showed patterns of the gaps in each size class and integrated by the three size classes, they were random and cluster, respectively. Furthermore, the MCF revealed that the gap size classes were independently located in the clusters. The total frequency of the small, medium and large gaps in turns was 32, 49 and 19%, respectively. Although the density share of medium and small gaps in turns was more frequent than the large gap density in the study forest, the results of DC indicated that the frequency of each gap size class was random within each cluster, regardless of their density share. Based on the natural gap aggregations, the base circular mosaic with an area of 5 000 m2 can be introduced for monitoring and specifying the forest stand dynamics.

References:
Amanzedeh B., Pourmajidian M.R., Sagheb-Talebi K., Hojati S.M. (2015): Impact of canopy gap size on plant species diversity and composition in mixed stands, case study: Reserve area, District No. 3 Asalem Forests. Journal of Forest and Wood Product, 68: 287–301.
 
Asner G.P., Keller M., Silvas J.N.M. (2004): Spatial and temporal dynamics of forest canopy gaps following selective logging in the eastern Amazon. Global Change Biology, 10: 765–783. https://doi.org/10.1111/j.1529-8817.2003.00756.x
 
Frelich L.E., Lorimer C.G. (1991): Natural disturbance regimes in hemlock-hardwood forests of the Upper Great Lakes region. Ecological Monographs, 61: 145–164. https://doi.org/10.2307/1943005
 
Garbarino M., Borgono Mondino E., Lingua E., Nagel T.A., Dukić V., Govedar Z., Motta R. (2012): Gap disturbances and regeneration patterns in a Bosnian old-growth forest: A multispectral remote sensing and ground-based approach. Annals of Forest Science, 69: 617–625. https://doi.org/10.1007/s13595-011-0177-9
 
Karami A., Feghhi J., Marvi Mohajer M.R. (2013): Analysis environmental and ecological spatial state of forest regeneration patches in various types natural Fagetum – orientalis north Iran. (Case study: Gorazbon district, Kheyrod Forest). Journal of Natural Environment, 66: 411–422.
 
Li Y., He J., Yu S., Zhu D., Wang H., Ye S. (2019): Spatial structure of the vertical layers in a subtropical secondary forest 57 years after clear-cutting. iForest – Biogeosciences and Forestry, 12: 442–450. https://doi.org/10.3832/ifor2975-012
 
Mataji A., Babaei-Kafaki S., Safaei H., Kiadaliri H. (2008): Spatial pattern of regeneration gaps in managed and unmanaged stands in natural beech (Fagus orientalis) forests. Iranian Journal of Forest and Poplar Research, 16: 149–157.
 
Mohammadi L., Mohadjer M.R.M., Etemad V., Sefidi K., Nasiri N. (2019): Natural regeneration within natural and man-made canopy gaps in Caspian natural beech (Fagus orientalis Lipsky) forest, Northern Iran. Journal of Sustainable Forestry, 39: 61–75. https://doi.org/10.1080/10549811.2019.1611453
 
Muscolo A., Bagnato S., Sidari M., Mercurio R. (2014): A review of the roles of forest canopy gaps. Journal of Forestry Research, 25: 725–736. https://doi.org/10.1007/s11676-014-0521-7
 
Nagel T.A., Mikac S., Dolinar M., Klopcic M., Keren S., Svoboda M., Diaci J., Boncina A., Paulic V. (2017): The natural disturbance regime in forests of the Dinaric Mountains: A synthesis of evidence. Forest Ecology and Management, 388: 29–42. https://doi.org/10.1016/j.foreco.2016.07.047
 
Nasiri N., Mohadjer M.R.M., Etemad V., Sefidi K., Mohammadi L., Gharehaghaji M. (2018): Natural regeneration of oriental beech (Fagus orientalis Lipsky) trees in canopy gaps and under closed canopy in a forest in northern Iran. Journal of Forestry Research, 29: 1075–1081. https://doi.org/10.1007/s11676-017-0490-8
 
Parhizkar P., Amanzadeh B., Hassani M., Sadeghzadeh M.H. (2020): Effect of single tree selection system on some of the canopy gap characteristics within Shafaroud beech forests. Forest Research and Development, 6: 203–218. (in Persian)
 
Ripley B.D. (1976): The second-order analysis of stationary point processes. Journal of Applied Probability, 13: 255–266. https://doi.org/10.2307/3212829
 
Schliemann S.A., Bockheim J.G. (2011): Methods for studying treefall gaps: A review. Forest Ecology and Management, 261: 1143–1151. https://doi.org/10.1016/j.foreco.2011.01.011
 
Spies T.A., Franklin J.F., Klopsch M. (1990): Canopy gaps in Douglas-fir forest of the Cascade mountains. Canadian Journal of Forest Research, 20: 649–658. https://doi.org/10.1139/x90-087
 
Stueve K.M., Perry C.H., Nelson M.D., Healey S.P., Hill A.D., Moisen G.G., Cohen W.B., Gormanson D.D., Huang C. (2011): Ecological importance of intermediate windstorms rivals large, infrequent disturbances in the northern Great Lakes. Ecosphere, 2: 1–21. https://doi.org/10.1890/ES10-00062.1
 
Wälder K., Wälder O. (2008): Analysing interaction effects in forests using the mark correlation function. iForests – Biogeosciences and Forestry, 1: 34–38. https://doi.org/10.3832/ifor0449-0010034
 
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