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Journal of the Forestry (Šumarski list), Vol. 147 No. 3-4, 2023.

Original scientific paper

https://doi.org/10.31298/sl.147.3-4.1

Growth models for natural stands of Calabrian pine in the central Mediterranean region of Türkiye

Aydn Kahriman orcid id orcid.org/0000-0001-9696-1153 ; Artvin Coruh University Faculty of Forestry: Artvin, TR
Abdurrahman Şahin orcid id orcid.org/0000-0002-9435-9844 ; Artvin Coruh University Faculty of Forestry: Artvin, TR
Turan Sönmez ; Bursa Teknik Üniversitesi: Bursa, TR
Mehmet Yavuz orcid id orcid.org/0000-0002-1481-2849 ; Artvin Coruh University Faculty of Forestry: Artvin, TR

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Abstract

Stand growth models are needed for a variety of forestry practices, primarily management plans and silvicultural studies. The goal of this study was to create stand-level models for natural, pure even-aged stands of Calabrian pine in the central Mediterranean region of Turkey. The study area consists of pure and natural Calabrian pine stands located within the boundaries of the Antalya and Mersin Regional Forestry Directorates in the central Mediterranean region of Turkey. Data was collected from 486 temporary plots scattered throughout the region. Two trees (the dominant tree and the tree representing the quadratic mean diameter of the stand) were measured in each plot, yielding 972 trees. The data showed that the age varied from 6 to 135 years, the site index (SI) from 8.5 to 33.5 m, and the density from 0.3 to 12.4. The density-dependent yield tables were generated using regression equations based on stand age, SI, and stand density with individual, two-factor, and three-factor interaction effects. For SI classes I, II, and III, the optimal rotation period that would result in the highest yields for pure Calabrian pine stands is 60, 65, and 75 years, respectively. The stand growth models developed (i.e., density-dependent yield tables) agreed with the fundamental growth principles and data provided in the literature.

Keywords

stand models; density-dependent yield table; Calabrian pine; density; Generalized Algebraic Difference Approach (GADA)

Hrčak ID:

300843

URI

https://hrcak.srce.hr/300843

Publication date:

30.4.2023.

Article data in other languages: croatian

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