Özet:

This study aims to determine the differences in land use and the effects of some characteristics of the soil on nitrogen mineralization. In the framework of this study, samples were taken at 5 different points from each of the forests, tea, nuts and kivi areas in Rize, Kalkandere. From each sample area, one soil hole was opened and 40 damaged and un damaged soil samples were taken from the 0-15 cm and 15-30 cm depth stages. In soil samples are identified characteristics such as texture, soil reaction (pH), organic carbon, total nitrogen, carbon/natrogen ratio, electrical conductivity (EC), cranberry (CaCO3), volume weight and nitrogen mineralization. The nanoparametric Kruskal Wallis test has been applied to determine the differences in soil characteristics according to the land use condition. In the two comparisons of the land use status, the Dunn's Bonferroni test was applied. According to the results of the analysis, the thickness of 0-15 cm is significantly different from the thickness of the soil, pH, organic carbon, electrical conductivity, volume weight, T0NO3, T0NH4+NO3, T63NH4 and T63NH4+NO3, while the thickness of 15-30 cm is significantly different from the thickness of the soil, thickness, pH, electrical conductivity, volume weight, T63NH4 and T63NH4+NO3. According to this study, natural forest areas have found that the soil contains significantly less kil (p=0,008), EC (p=0,003), volume weight (p=0,003), T0NO3 (p=0,006) and T0NH4+NO3 (p=0,005); more sand (p=0,006) and T63NH4+NO3 (p=0,007).

Anahtar Kelimeler:

Özet:

The aim of the present study was to investigate the effect of of land use change on some properties and N-mineralization of the soils. For this purpose, 5-different point was sampled in each land use including natural forest, tea plantation, hazelnut and kiwi fields. Total 40 disturbed and undisturbed soil samples were taken from 0-15 cm and 15-30 soil depth in each sample plot. The texture, pH, electrical conductivity, CaCO3 content, bulk density, total nitrogen, C/N ratio and N-mineralization were determined on each soil sample. Non-parametric Kruskal Wallis test was carried out to determine differences in given soil properties according to land uses. Then Dunn’s Bonferroni test was carried out for pairwise comparisons of the land-cover groups. As a result, while the clay content, pH, organic carbon, EC, bulk density, T0NO3, T0NH4+NO3, T63NH4 and T63NH4+NO3 in 0-15 cm soil depth were significantly (p<0,05) affected by land use change; in 15-30 soil depth, sand and clay content, pH, EC, bulk density, T63NH4 and T63NH4+NO3 were affected. It was concluded that natural forests’ soils have had significantly less clay content (p=0,008), EC (p=0,003), bulk density (p=0,003), T0NO3 (p=0,006) and T0NH4+NO3 (p=0,005); more sand content (p=0,006) and T63NH4+NO3 (p=0,007) compared to the other land uses.