The effects of land use conversion on soil organic carbon and selected properties of soils: A case of Nigde province

Year 2018, Volume: 19 Issue: 4, 362 - 367, 30.12.2018

Selma Yaşar Korkanç , Halil Şahin Ahmet Onur Özden Burak Özkurt

https://doi.org/10.18182/tjf.436132

Cited By: 3

Abstract

The aim of this study was to determine land use change effects on soil organic carbon and some selected soil properties in a land converted from rangeland to fast growing poplar plantation area 15 years ago. Soil samples were taken according to the systematic sampling method in two different land use types; rangeland and poplar plantation. 12 of disturbed and 12 of undisturbed (using 100 cm3 bulk steel cylinders) topsoil samples (0-20 cm depth) were taken from each land use types. Soil samples were analyzed for particle size distribution (texture), particle density, pH, electrical conductivity, organic carbon, aggregate stability, bulk density, total porosity, water holding capacity, and dispersion ratio. Data were analyzed by using one way analysis of variance at 95 % significance level. According to results of this study, bulk density, total porosity, pH, organic carbon, aggregate stability, clay, sand, silt and dispersion ratio values of the soils were affected from land use conversion. Soil organic carbon, aggregate stability and total porosity of soils increased whereas bulk density and pH of soils decreased after land cover change from rangeland to poplar plantation area.

Keywords

Land use change, Soil properties, Soil organic carbon, Agroforestry, Fast growing plantation

Arazi kullanımı dönüşümlerinin toprakların organik karbon depolama ve bazı özellikleri üzerindeki etkileri: Niğde yöresi örneği

Abstract

Bu çalışmanın amacı, Niğde yöresinde 15 yıl önce kavaklığa dönüştürülmüş bir bozuk mera alanının organik karbon düzeyinde ve bazı toprak özelliklerinde arazi kullanım değişiminin etkisini ortaya koymaktır. Çalışmada, komşu mera ve kavaklık alan olmak üzere iki farklı arazi kullanım şeklinden sistematik örnekleme yöntemine göre 12 farklı noktadan 0-20 cm derinlikten doğal yapısı bozulmuş ve doğal yapısı bozulmamış toprak örneği alınmıştır. Tane boyut dağılımı (tekstür), tane yoğunluğu, pH, elektriksel iletkenlik, organik karbon, agregat stabilitesi, hacim ağırlığı, boşluk hacmi, maksimum su tutma kapasitesi, dispersiyon oranı özellikleri belirlenmiştir. Veriler tek yönlü varyans analizi ile değerlendirilmiştir. Araştırma sonucunda arazi kullanımı değişiminden hacim ağırlığı, boşluk hacmi, pH, organik karbon, agregat stabilitesi, kil, kum, silt ve dispersiyon oranı özelliklerinin etkilendiği belirlenmiştir. Kavaklık alanda organik karbon, agregat stabilitesi ve boşluk hacminde 15 yıllık periyotta artış olduğu, hacim ağırlığı ve pH’da ise azalma olduğu saptanmıştır.

Keywords

Arazi kullanımı değişimi, Toprak özellikleri, Organik karbon, Tarımsal ormancılık, Hızlı gelişen tür

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