The Effects of Long-Term Land Uses on Organic Carbon Associated With Aggregate Fractions in the Çarşamba Plain

Authors : Abdelrahman Abdelkarem Mostafa Mohamed, Edip Erhan Küçük, Serkan İç, Mustafa Sağlam
Pages : 257-276
Doi:10.7161/omuanajas.1629176
View : 54 | Download : 29
Publication Date : 2025-06-30
Article Type : Research Paper
Abstract :Land uses and associated management practices can significantly change soil properties in agricultural areas. These changes in soil properties can cause both a decrease in soil fertility in agricultural areas and an increase in the sensitivity of agricultural soils to various processes such as climate change, erosion, and desertification. The current study investigated the effects of long-term land use types on soil properties in alluvial soils located in the Çarşamba plain. Soil properties such as aggregate size distribution, soil organic carbon (SOC) content associated with aggregates and soil organic carbon stock (SOCStock), structure stability index (SSI), aggregate stability index (ASI), unstable aggregate index (ELT), mean weighted diameter (MWD) and geometric mean diameter (GMD) were measured in soil samples collected from five different land use types (vegetable, cherry, persimmon, maize, and rice) and three different soil depths (0.0-7.5 cm, 7.5-15.0 cm, and 15.0-30.0 cm). The results showed that different land use types statistically affected all the examined soil properties (p<0.05, p<0.01). The highest and lowest SSI values were obtained in persimmon land use (2.2%) and rice land use (1.8%), respectively, while the same land uses were found to have the statistically highest values (0.8) for ASI. Vegetable land use had the highest statistical impact on aggregate-associated SOC content across most of the examined aggregate sizes. Therefore, it is recommended to perform rotation cropping systems that increase organic matter (OM) input to reduce the adverse effects of land uses and soil management on aggregates-related SOC content and SOCStock in alluvial areas.
Keywords : Arazi Kullanımı, Agregat Büyüklük Dağılımı, Toprak Organik Karbon Stoğu, Strüktür Stabilite İndeksi, Stabilite İndeksi

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