Yarı-humid ekolojik koşullar altında oluşmuş toprakların bazı fiziko-kimyasal özellikleri belirlenmesi ile seri düzeyinde haritalanması ve sınıflandırması

The aim of this study is to determine basic physico-chemical soil properties, make soil classification, create a soil database and generate a digital soil map for agricultural areas which covers about 397.28 ha and includes 1523 parcels of Seyitali, Kaya, Idrisli, Muhsinli, Beykoy and Cayirli neighborhoods located at Kavak district in the south of Samsun province. The mean annual temperature is 10.2OC and the annual average rainfall is 512.5 mm. According to Newhall simulation model, soil temperature and moisture regimes are Mesic and Typic Xeric, respectively. Field observations and investigation of topographical, geological and geomorphological maps, six soil pedons were described. Soil samples were taken from each pedons based on genetic horizon and laboratory analyses were performed. Detailed field study was carried out with grid method and auger examination. By assessing the results of analyses and field studies, six soil series were determined and described. Three of them were classified as Entisol due to their little pedogenic horizon development , the two of them were Inceptisol and one was Verisol. Entisols cover about 67.5% of the total area followed by Inceptisols with 21.8% and Vertisols with 10.6%. As for FAO-WRB, classification system, soils were classified as Vertisol, Cambisol and Regosol. In addition, whereas the Cayirli series has the largest area (24.08%), the Idrisli series was determined as the smallest land (8,17%) in the study area.