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Üst toprak özelliklerinde bakıya bağlı farklılıklar: Limne Deresi Havzası örneği (Tekirdağ, Türkiye)

Aspect-related differences in topsoil properties: A case study in the Limne River Basin (Tekirdağ, Türkiye)

Emre Özşahin(TEKİRDAĞ NAMIK KEMAL ÜNİVERSİTESİ)0000-0001-8169-6908
Mikayil Öztürk(TEKİRDAĞ NAMIK KEMAL ÜNİVERSİTESİ)0009-0009-6482-108X
Sayfa
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Yayın Tarihi
2026-10-25
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Bulgular Kuzeye bakan alanlarda kum içeriği daha düşük (%43,87’ye karşı %54,51; düzeltilmiş p = 0,035), silt (%32,78’e karşı %21,09; düzeltilmiş p = 0,014) ve TOM (%7,59’a karşı %4,48; düzeltilmiş p = 0,039) daha yüksek bulunmuştur.

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Amaç & Hipotez:Giriş ve Hedefler Bu çalışmada, Limne Deresi Havzasında yükselti bakımından eşleştirilmiş kuzeye ve güneye bakan yamaçların 0–20 cm üst toprak özellikleri karşılaştırılmıştır.
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Temel Bulgular & Veri:Yöntemler On eşleştirilmiş bloktan 20 kompozit örnek alınmış; tane boyu dağılımı, pH, toprak organik maddesi (TOM), elektriksel iletkenlik (EC) ve kalsiyum karbonat eşdeğeri (CCE) belirlenmiştir.
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Sonuç & Katkı:Bulgular Kuzeye bakan alanlarda kum içeriği daha düşük (%43,87’ye karşı %54,51; düzeltilmiş p = 0,035), silt (%32,78’e karşı %21,09; düzeltilmiş p = 0,014) ve TOM (%7,59’a karşı %4,48; düzeltilmiş p = 0,039) daha yüksek bulunmuştur.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Bakı · eşleştirilmiş tasarım · tane boyu dağılımı

Özet

Giriş ve Hedefler Bu çalışmada, Limne Deresi Havzasında yükselti bakımından eşleştirilmiş kuzeye ve güneye bakan yamaçların 0–20 cm üst toprak özellikleri karşılaştırılmıştır. Yöntemler On eşleştirilmiş bloktan 20 kompozit örnek alınmış; tane boyu dağılımı, pH, toprak organik maddesi (TOM), elektriksel iletkenlik (EC) ve kalsiyum karbonat eşdeğeri (CCE) belirlenmiştir. Farklılıklar kesin eşleştirilmiş permütasyon testi, bootstrap güven aralığı, etki büyüklüğü ve Holm düzeltmesiyle değerlendirilmiştir. Bulgular Kuzeye bakan alanlarda kum içeriği daha düşük (%43,87’ye karşı %54,51; düzeltilmiş p = 0,035), silt (%32,78’e karşı %21,09; düzeltilmiş p = 0,014) ve TOM (%7,59’a karşı %4,48; düzeltilmiş p = 0,039) daha yüksek bulunmuştur. Kil, pH, EC ve CCE için anlamlı farklılık belirlenmemiştir. Kuzey örneklerinin yedisi tın, üçü killi tın; güney örneklerinin yedisi kumlu killi tın, diğerleri kumlu tın, tın ve killi tın olarak sınıflandırılmıştır. Sonuçlar Yamaçlar tane boyu dağılımı, tekstür sınıfı ve TOM bakımından farklılaşmış; ancak bitki örtüsü, eğim ve olası litolojik farklılıklar nedeniyle sonuçlar bakının bağımsız nedensel etkisi olarak yorumlanmamıştır.

Abstract

Background and aims This study compared the properties of 0–20 cm topsoil between elevation-matched north- and south-facing hillslopes in the Limne River Basin. Methods Twenty composite samples were collected from ten matched blocks and analyzed for particle-size distribution, pH, soil organic matter (SOM), electrical conductivity (EC), and calcium carbonate equivalent (CCE). Differences were evaluated using exact paired randomization tests, bootstrap confidence intervals, effect sizes, and Holm correction. Results North-facing sites had less sand (43.87% vs. 54.51%; adjusted p = 0.035) and more silt (32.78% vs. 21.09%; adjusted p = 0.014) and SOM (7.59% vs. 4.48%; adjusted p = 0.039). The clay, pH, EC, and CCE levels did not differ significantly. Seven northern samples were loam and three were clay loam, whereas seven southern samples were sandy clay loam, and the others were sandy loam, loam, and clay loam. Conclusions The hillslopes differed in particle-size distribution, textural-class distribution, and SOM; however, because vegetation, slope gradient, and potentially lithology also varied, the results were not interpreted as the independent causal effect of aspect.

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Bu Makaleye Atıf Yap

Özşahin, E., Öztürk, M. (2026). Üst toprak özelliklerinde bakıya bağlı farklılıklar: Limne Deresi Havzası örneği (Tekirdağ, Türkiye). Anadolu Orman Araştırmaları Dergisi, Sayı: 13. https://doi.org/10.53516/ajfr.1996163

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