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Journals / Ondokuz Mayıs Üniversitesi İnsan Bilimleri Dergisi / 2025 / Cilt: 6 Sayı: 2

Spatial and Organ-Based Variations of Potassium (K) and Phosphorus (P) Concentrations in Woody Plant Species and Soils in Kastamonu, Hanönü

Kastamonu, Hanönü’nde Odunsu Bitki Türleri ve Topraklarda Potasyum (K) ve Fosfor (P) Konsantrasyonlarının Mekânsal ve Organa Dayalı Değişimleri

Cansel Çakır(ONDOKUZ MAYIS ÜNİVERSİTESİ)0009-0007-1740-166X
Mehmet Çetin(ONDOKUZ MAYIS UNIVERSITY)0000-0002-8992-0289
Pages
147–157
Publication Date
2025-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results indicated significant differences (p < 0.05) in K and P concentrations among species and organs.

📌 3 Key Takeaways

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Objective & Hypothesis:Understanding nutrient dynamics between plants and soils is crucial for sustainable forest management, particularly in areas where fertilization is not commonly practiced.
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Key Findings & Data:Samples were collected from five plant organs (needle/leaf, bark, cone, wood, root) and from three soil depths (0–5 cm, 20–30 cm, and 50–60 cm).
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Conclusion & Impact:The results indicated significant differences (p < 0.05) in K and P concentrations among species and organs.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Potasyum (K) · Fosfor (P) · Toprak derinliği

Abstract

Understanding nutrient dynamics between plants and soils is crucial for sustainable forest management, particularly in areas where fertilization is not commonly practiced. This study investigates the distribution and accumulation patterns of two essential macronutrients, potassium (K) and phosphorus (P), in different plant organs and soil depths within a forested area in Kastamonu, Hanönü. Four tree species—Pinus nigra Arnold (black pine), Pinus sylvestris L. (Scots pine), Fagus orientalis Libsky (Oriental beech), and Abies nordmanniana subsp. bornmülleriana Mattf. (Turkish fir)—were examined. Samples were collected from five plant organs (needle/leaf, bark, cone, wood, root) and from three soil depths (0–5 cm, 20–30 cm, and 50–60 cm). Elemental analyses were performed using ICP-OES following microwave digestion. The results indicated significant differences (p < 0.05) in K and P concentrations among species and organs. The highest K concentrations were found in leaves, while wood consistently exhibited the lowest values. Fo species showed high K accumulation in wood, potentially leading to soil depletion due to wood harvesting. Conversely, Ab species exhibited significant P accumulation in cones and leaves, contributing to P enrichment in topsoil through litter decomposition. Soil nutrient concentrations also varied significantly by depth but were less influenced by species. These findings highlight the role of species-specific nutrient uptake and organ distribution in shaping soil nutrient dynamics. Incorporating these patterns into forest management strategies—such as species rotation—can help maintain soil fertility and promote long-term ecosystem sustainability.

Özet

Bitkiler ile toprak arasındaki besin döngüsünün anlaşılması, özellikle gübrelemenin yaygın olarak uygulanmadığı bölgelerde, sürdürülebilir orman yönetimi açısından büyük önem taşımaktadır. Bu çalışma, Kastamonu’nun Hanönü ilçesindeki ormanlık bir alanda, iki temel makro besin elementi olan potasyum (K) ve fosforun (P) farklı bitki organları ve toprak derinliklerindeki dağılım ve birikim desenlerini incelemektedir. Dört ağaç türü — Pinus nigra Arnold (karaçam), Pinus sylvestris L. (sarıçam), Fagus orientalis Libsky (doğu kayını) ve Abies nordmanniana subsp. bornmülleriana Mattf. (Uludağ göknarı) — araştırmaya dâhil edilmiştir. Örnekler beş bitki organından (iğne/yaprak, kabuk, kozalak, odun, kök) ve üç farklı toprak derinliğinden (0–5 cm, 20–30 cm, 50–60 cm) toplanmıştır. Element analizleri, mikrodalga sindirimi sonrası ICP-OES yöntemiyle gerçekleştirilmiştir. Sonuçlar, türler ve organlar arasında K ve P konsantrasyonları açısından anlamlı farklılıklar (p < 0.05) olduğunu göstermiştir. En yüksek K konsantrasyonları yapraklarda bulunurken, en düşük değerler odun dokusunda saptanmıştır. Fo türleri, odun dokusunda yüksek K birikimi göstermiş ve bu durum, odun hasadı nedeniyle toprakta besin kaybına yol açma potansiyeli taşımaktadır. Buna karşılık, Ab türleri kozalak ve yapraklarda belirgin P birikimi göstermiş, bu da döküntülerin ayrışması yoluyla yüzey toprağında P zenginleşmesine katkıda bulunmuştur. Toprak besin konsantrasyonları derinliğe göre anlamlı biçimde değişmekle birlikte, tür etkisi daha sınırlı bulunmuştur. Bu bulgular, türlere özgü besin alımı ve organlar arasındaki dağılımın toprak besin dinamiklerinin şekillenmesinde önemli bir rol oynadığını göstermektedir. Bu desenlerin orman yönetimi stratejilerine — örneğin tür rotasyonu uygulamalarına — dâhil edilmesi, toprak verimliliğinin korunmasına ve uzun vadeli ekosistem sürdürülebilirliğinin desteklenmesine katkı sağlayabilir

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Cite This Article

Çakır, C., Çetin, M. (2025). Spatial and Organ-Based Variations of Potassium (K) and Phosphorus (P) Concentrations in Woody Plant Species and Soils in Kastamonu, Hanönü. Ondokuz Mayıs Üniversitesi İnsan Bilimleri Dergisi, Cilt: 6 Sayı: 2, 147–157. https://doi.org/10.51533/insanbilimleri.1806559

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