The effects of prescribed burning on seed germination, seedling growth and development and soil properties in pure Anatolian black pine and scots pine stands

In this study, the effects of prescribed fires on seed germination, seedling growth and development and on soil properties were studied in mature pure Anatolian black pine (Pinus nigra Arn. subsp. Pallasiana Lamb.) and scots pine (Pinus sylvestris L.) stands. In addition, the study includes economic analysis of different silvicultural practices. The study areas were determined from the areas where black pine and scots pine are naturally distributed. Study areas were divided into different experimental plots. Measurements and observations were made in these plots for a period of two years. Differences were found in terms of basic soil properties between the plots where different silvicultural practices were carried out. As a result of mechanical site preparation, the soil structure was destroyed, the soils in different levels of depth were mixed together and time-dependent fluctuations occurred in soil properties. The burning applications affected the mineral topsoil (0-5 cm) and soil properties vary over time depending on the combustion conditions. In general, the seedlings in the plots where prescribed fire practices were carried out showed better growth and development compared to the seedlings in the plots where standard silvicultural practices were carried out. As a result of the cost-benefit analysis, it has been determined that it is economically viable to integrate fires into natural regeneration practices. In the study, a regeneration approach based on the role played by fires in ecosystem processes was also suggested for the country. Results have the potential to make significant contributions to forestry discipline.