Yazar "Koc, I." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    Change of Cr concentration from past to present in areas with elevated air pollution
    (Springer, 2023) Koc, I.; Cobanoglu, H.; Canturk, U.; Key, K.; Kulac, S.; Sevik, H.
    Chromium (Cr) is one of the most detrimental heavy metals, the concentration of which has increased significantly in nature in the last century. Cr pollution can cause toxic and harmful health effects by causing high accumulation levels in animal and human tissues, seriously affecting ecosystems and natural resources. Due to environmental and human health risks, it is critical to track the change of Cr pollution in the air and reduce it. This study aims to determine the suitable tree species that can be used for observing and reducing Cr pollution. For this purpose, samples (wood, inner bark and outer bark) taken from Pinus pinaster, Cupressus arizonica, Picea orientalis, Cedrus atlantica, and Pseudotsuga menziesii species grown in Duzce, Turkiye, which is among the 5 most polluted cities in Europe according to the World Air Pollution 2021 Report, were examined. The accumulation of Cr concentration was determined by species (40-year-old), organ, and direction, and changes in age range were evaluated. As a result of the study, while the highest concentration levels were determined in the outer bark in general, it was interpreted that the branching structure affected this situation. The study results reveal that, in general, Cr pollution is mainly caused by traffic. It has been determined that C. arizonica and P. menziesii are the suitable tree species that can be used for observing and reducing Cr pollution in the air.
  • Küçük Resim Yok
    Öğe
    Climate change and urban thermal stress: spatial-temporal analysis of bioclimatic comfort in Bursa, Türkiye
    (Springer, 2025) Canturk, U.; Koc, I.; Aricak, B.
    Climate change is reshaping global environmental dynamics, with profound implications for urban livability. This study evaluates long-term bioclimatic comfort shifts in Bursa, T & uuml;rkiye-a key industrial and agricultural region-using Discomfort Index (DI) and Effective Temperature-taking wind velocity (ETv) techniques under SSP2-4.5 (middle-of-the-road development) and SSP5-8.5 (fossil fuel-based development) scenarios (2022-2100). Model validation via AUC-ROC demonstrated robust accuracy for both indices (DI: 0.679-0.704; ETv: 0.602-0.654), confirming their reliability in projecting spatial-temporal changes. Results indicate a pronounced warming trend, with Bursa transitioning from cool to warm bioclimatic zones: by 2100, 62.9% (SSP2-4.5) to 69.1% (SSP5-8.5) of the province will shift into warmer comfort classes per DI, while ETv projects expanding very hot zones (8.5% under SSP5-8.5). Concurrent humidity declines (up to 4-6% reduction by 2100) will exacerbate thermal stress, particularly in urbanized areas. Projected changes will significantly increase cooling energy demands and public health risks, demanding urgent climate adaptation in urban planning. Our transferable methodology provides actionable insights for enhancing heat resilience and sustainable infrastructure in vulnerable Mediterranean cities. Overall, the findings emphasize the necessity of integrating thermal comfort concerns into regional development policies to mitigate escalating climate risks.