Sayısal renk parametreleri ile toprak özellikleri arasındaki ilişkiye toprak horizonlarının etkisi

Abstract

Toprak rengi, morfolojik, fiziksel, kimyasal ve mineralojik özellikler hakkında önemli bir veri kaynağıdır. Bu nedenle toprak bilimcileri, toprak horizon sınırlarının belirlenmesinde, renkteki farklıklardan faydalanmaktadırlar. Bu araştırmanın amacı A ve C horizonlarından alınan toprakların bazı fiziksel-kimyasal özellikleri ile sayısal renk parametreleri (L, a ve b) arasındaki ilişkiye etkisini belirlemektir. Alüviyal arazinin üst ve alt zonlarında bulunan 17 toprak profilinin A ve C horizonlarından toplam 91 adet toprak örneği alınmıştır. Toprak örneklerinde sayısal renk parametre değerleri (L, a ve b), tekstür, pH, elektriksel iletkenlik, kireç, organik madde, değişebilir K, Na, Ca+Mg, katyon değişim kapasitesi analizleri yapılmıştır. Elde edilen sonuçlara göre, Toprağın A horizonlarında L değeri ile pH (0.77**) ve kireç (0.82**) arasında, a değeri ile kum (0.54**), Ca+Mg (-0.65**) ve KDK (-0.65**) arasında ve b değeri ile kum (0.52**), Ca+ Mg (-0.55**) ve KDK (-0.56**) arasında önemli korelasyon olduğu tespit edilmiştir. Toprağın C horizonlarında L değeri ile silt (0.57**), pH (0.65**), kireç (0.81**) ve K (-0.50**), a değeri ile kil (-0.58**) ve kum (0.48**) arasında ve b değeri ile kil (-0.55**) ve kireç (0.68**) arasında önemli korelasyon olduğu bulunmuştur. Çoklu doğrusal regresyon analiz sonuçlarına göre; A horizonlarında L ve a değerleri ile pH (R2= 0.68) ve a ve b değerleri ile kireç (R2= 0.73) içeriğinin, C horizonlarında ise L, a ve b değerleri ile kireç içeriğinin tespit edilebileceği belirlenmiştir. Sayısal renk parametrelerinin (L, a ve b), pH ve kireç içeriğinin belirlenmesinde güvenilir bir şekilde kullanılabileceği ancak, bu performansın horizon farklılığından da (A ve C) etkilendiği belirlenmiştir.

Keywords

• Aksu
• alüviyal arazi
• toprak rengi
• Toprağın fiziksel ve kimyasal özellikleri

Effect of soil horizons on the relationship between digital color parameters and soil properties

Abstract

Soil color is an important data source about the morphological, physical, chemical and mineralogical properties of the soil. Therefore, soil scientists benefit significantly from soil color differences in determining the boundaries of soil horizons in field conditions. The aim of this research was to determine the effect of soils taken from A and C horizons on the relationship between some physical-chemical properties and digital color parameters (L, a and b). Ninety-one soil samples were taken from the A and C horizons of 17 soil profiles in the upper and lower zones of the alluvial land. Digital color parameters (L, a and b), texture, pH, electrical conductivity, lime, organic matter, exchangeable K, Na, Ca+Mg, cation exchange capacity (CEC) analyzes were performed in soil samples. A significant correlation was found between L value and pH (0.77**) and lime (0.82**), between a value and sand (0.54**), Ca+Mg (-0.65**) and CEC (-0.65**), and between b value and sand (0.52**), Ca+Mg (-0.55**) and CEC (-0.56**) in the A horizons. A significant correlation was found between L value and silt (0.57**), pH (0.65**), lime (0.81**) and K (-0.50**), between a value and clay (-0.58**), sand (0.48**), and between b and clay (-0.55**), lime (0.68**) in the C horizons. According to the results of multiple linear regression analysis; pH (R2= 0.68) value can be determined with L and a values, and lime (R2= 0.73) content can be determined using a and b values in A horizons, and lime content can be determined using L, a and b values in C horizons. It is concluded that digital color parameters can be used more reliably determining pH and lime content and this performance is affected by A and C horizons.

Keywords

• Aksu
• Alluvial land
• Soil color
• Physical and chemical properties of soil

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