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Ormancılık Araştırma Dergisi / Turkish Journal of Forestry Research
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This is an Open Access Journal

Open Access journal
ISSN (Print) 2149-0783 - ISSN (Online) 2149-0775
Published by DergiPark

[185 journals]

Investigating the effect of landslide on the changes in topsoil carbon
stock in a spruce stand (A case study of Trabzon- Maçka)
- Authors: Filiz Yüksek; Abdurrahman Semercioğlu, Halil Dağdelen, Eray Özdemir, Hakan Ersoy, Murat Karahan
  Abstract: Due to climate change affecting rainfall regimes, there is an increase in the frequency and size of landslides, especially in mountainous topographies with very high rainfall amounts. Although it is known that this situation affects the carbon storage capacity of the land, numerical data on this subject are insufficient. In this study; some soil properties were determined on soil samples taken from the landslide forest area and an adjacent non-landslide forest area in Trabzon Regional Directorate of Forestry. In addition, it was calculated how much carbon was stored in the topsoil in both areas. According to the research results, significant changes were detected in many properties of the forest soil after the landslide. It was determined that 65.33 Mg C/ha of organic carbon was stored in the topsoil in the forest area (spruce stand), while 15.48 Mg C/ha of carbon was stored in the landslide area. Therefore, it was observed that there was a 76.31% decrease in carbon stocks in the topsoil in the forest area after the landslide. It was also concluded that landslides may reduce the carbon storage capacity of the topsoil due to the change in soil texture. Therefore, priority should be given to modeling studies to determine the effect of landslides on carbon sinks in the Black Sea Region, which has a steep topography with high rainfall. In addition, research should be conducted to reduce the effect of the landslide or to reveal the processes related to the carbon storage capacity after the landslide.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
A qualitative analysis of the Western Mediterranean Region truffle market
- Authors: Ersin Yılmaz
  Abstract: The aim of the study is to increase the suitability of truffles to the Western Mediterranean Region market, to emphasize the areas of interest that managers should focus on in a successful management process, and to identify important market features that affect the possible development of the sector. SWOT Analysis, one of the qualitative research techniques, was used in the study, and a total of 113 people were interviewed, including truffle collectors and growers (producers), master chefs, restaurant owners, distributors, retailers, Forestry Organization (OGM) representatives, and truffle experts. With SWOT Analysis, strategic recommendations that should be followed by important interest groups were put forward, highlightingthe “Strengths” and “Opportunities/Possibilities” that farmers, managers, and other interest groups benefit from,while also identifying the “Weaknesses” and “Threats/Dangers” that need to be overcome. Thus, this study is designed to contribute to the strategic management and marketing of specialty foods in the case of truffles, and its results show that the truffle market is small in size and has unusual features.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
Tree breeding in British Columbia (Canada) forestry
- Authors: Fatih Temel
  Abstract: British Columbia (BC) is Canada’s westernmost province and has a surface area approximately 1.2 times that of Türkiye. Forests cover more than half of BC, and forestry is the second most important sector of the province’s economy, following energy. Approximately 200 thousand hectares are harvested every year, almost all of which (95%) is crown land, and 80% of this is artificially regenerated. More than 80% of seedlings required for regeneration are of Pseudotsuga menziesii, Pinus contorta var. latifolia, and Picea glauca x engelmannii species. Breeding studies carried out on 13 tree species, including these three species, resulted in around 20% genetic gain in volume growth. Legal regulations that require the use of genetically improved seeds for regeneration and a well-functioning seed production and registration system ensure the realization of the benefits of tree breeding in wood production. In order to establish stands adapted to changing climate conditions, intensive studies are undertaken on seed transfer, and the information obtained from these studies is taken into account in tree breeding programs.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
Utilization of windbreaks in agricultural areas as agroforestry practices
- Authors: İbrahim Turna; Fahrettin Atar, Deniz Güney, Hülya Turna
  Abstract: In order to ensure sustainable land use and conservation in various ecological regions of Türkiye, a balanced approach must be taken towards agriculture, forestry, protected areas, and settlements. Particularly in combating issues such as global climate change, desertification, and erosion, agroforestry practices based on land capability classes play a crucial role. Given the impacts of wind erosion, the utilization of windbreaks in agricultural areas becomes paramount. The effectiveness of windbreaks relies on a comprehensive analysis of installation principles, including factors such as height, continuity, permeability, orientation, and length. When considering all these factors, the unique characteristics of each region should be examined, and studies should be conducted based on the economic, ecological, and social factors specific to the area, in accordance with regional conditions. However, for these practices to be effective, careful attention must be paid to aspects such as plant selection, installation techniques, and maintenance. Agricultural forestry practices, particularly the multifaceted contributions of windbreaks to agricultural production and their preventive role against climate change scenarios, are expected to play a significant role. Therefore, region-specific studies should be accelerated, and governmental support should increase. In the realm of agricultural pursuits, environmentally conscious individuals opting for living windbreaks over barbed wire fences, wooden stakes, or concrete barriers contribute to the establishment of sustainable ecosystems by fostering harmony with nature and enhancing biological diversity.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
Effects of different site preparation, spacing and sowing⁃planting
methods on growth performance of Turkish Red Pine (Pinus brutia Ten.) in
industrial plantations
- Authors: Cemal Fidan; Neşat Erkan, Necat Demirsu, Erol Cabak
  Abstract: The study was conducted to investigate the effects of site preparation, spacing and sowing-planting methods on sapling height growth (SHG) and sapling survival percentage (SSP) in Turkish Red Pine industrial plantations. The research was conducted in three locations (Balıkesir/Savaştepe, Aydın/Karacasu and Muğla/Seydikemer) according to the factorial design, in parcels divided in blocks with 3 replications. SPSS package program was used in data analysis and independent sample t-Test was applied. According to the results; While there was no difference between SSP in the saplings planted in the parcels where pit-shaped tillage (PST) and full-area tillage (FAT) were carried out in the Karacasu and Savaştepe areas, a difference was found in the Seydikemer area. SSP was found to be higher in planted areas than in cultivated areas. Among the site preparation treatments, the height growth was significantly different in the Karacasu and Seydikemer areas, but not in the Savaştepe area. In terms of height growth, FAT site preparation was more successful in the Karacasu area, PST site preparation was more successful in the Seydikemer area, and no difference was found in the Savaştepe area. At the end of the fifth year, the best sapling height growth was 3.14 m, obtained from the saplings planted in the FAT treatment plots in the Karacasu area. It can be said that when choosing the appropriate area for industrial plantation, the stoniness of the soil should be taken into consideration together with the site and slope status, and that it would be more appropriate to carry out natural regeneration instead of full-area deep soil cultivation for Turkish Red Pine industrial plantations in karst lands.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
The effect of damage and control of pine processionary moth (Thaumetopoea
wilkinsoni) on growth in red pine (Pinus brutia) plantations
- Authors: Mustafa Batur; Niyazi Özçankaya, İkbal Meltem Özçankaya
  Abstract: Pine processionary moth (PPM) caterpillar feeds on the needles of the Turkish pine trees and has some effects on tree health and growth. The damage of the caterpillar is particularly more severe in young red pine stands. The subject of this study is: The effects of the pine processionary caterpillar on the growth and yield of trees in young Turkish pine stands. These effects were investigated experimentally for three levels of caterpillar-caused damage in two sample areas. Sample trees were fed by the caterpillar at the three different damage level in a controlled manner (no light, moderate severe) for three years. The Control group was free from PPM. At the and of the 3rd year, all trees were cleared of the caterpillars and followed for the remain two years. By the end of the 5th year, annual and seasonal increments the trial trees were calculated. The finalvolume of the treatment groups was compared using ANCOVA, and the percentage of volume increments was compared using the ANOVA method. Different groups were determeined with post-hoc tests. As a result; a 27% of volume increase for modarate damage and a 35% volume increase for severe damage were observed. It was concluded that the damage severity above 33% had a significant effect on the volume increase, and the control group without the pine processionary moth returned the increase percentages to a normal level.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
Effect of compost obtained from biofuel on Anatolian black pine seedlings
growth
- Authors: Mehmet Sayman; Abdullah Sarımehmetoğlu, Dilek Güner
  Abstract: The aim of this research is to determine the effect of different compost amounts mixed into seedling growing media on some morphological characteristics and nutritional status of 2+0 old Anatolian black pine (PinusnigraJ.F. Arnold subsp.pallasiana(Lamb.) Asch. & Graebn.) seedlings. In the study, black pine seeds from Afyonkarahisar-Hocalar origin were used. Some morphological characteristics, needle, stem, and root nutrient contents of the seedlings grown with different compost amounts and the pot seedling production technique in Eskişehir Forest Nursery were determined. Random plots experimental design was used in the experiment. The data were evaluated using analysis of variance (p
  PubDate: Tue, 25 Jun 2024 00:00:00 +030
The effects of cultivation denstiy and seedling age on some morphological
- Authors: Erol Cabak; Selda Akgül, Cemal Fidan
  Abstract: As is known, the success of a plantation depends on the use of quality seedlings. In this study, it was aimed to grow the highest number of quality 1+0 and 2+0 aged Douglas Fir (P. menziesii (Mirb) Franco) seedlings in nursery beds per unit area. In the research, seeds of the USA Darrington Origin of Douglas, recommended for Turkey, were used. Trials were established in the Sındırgı and Demirköy forest nurseries with three replications. Based on traditional line planting in nursery beds, the effects of 5 different cultivation densities and seedling ages on root collar diameter, seedling height, root count, root dry weight, stem dry weight, seedling dry weight, stiffness, robustness index, and quality index were investigated. While 2+0 aged seedlings meet the condition of having a minimum root collar diameter of 3 mm at a rate of 94.33%, no 1+0 aged seedlings meet this condition. Root collar diameter, root count, root dry weight, and quality index value of 2+0 aged Douglas seedlings were determined at the lowest control; no significant difference was observed in other frequencies. The stiffness and robustness indexes were observed at the highest control, and the other operations were statistically in similar groups. In light of these data, it may be suggested to grow 2+0 old seedlings with a frequency of 3 cm in order to obtain the highest number of quality seedlings in the area of the nursery beds.
  PubDate: Tue, 25 Jun 2024 00:00:00 +030

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