경남지역 논 토양의 중금속 관리를 위한 기초 자료를 제공하고자 260 지점을 대상으로 2011년에 Cd, Cu, Ni, Pb, Zn 및 As 전함량과 0.1N HCl 가용성 Cr 함량을 분석하였다. 논토양의 중금속 평균 함량은 Cd 0.143 (범위 0.003-0.537) mg kg<SUP>-1</SUP>, Cr 0.322 (0.002-0.986) mg kg<SUP>-1</SUP>, Cu 25.41 (6.03-76.19) mg kg<SUP>-1</SUP>, Ni 16.36 (2.63-32.94) mg kg<SUP>-1</SUP>, Pb 18.67 (4.16-87.02) mg kg<SUP>-1</SUP>, Zn 71.76 (22.99-153.58) mg kg<SUP>-1</SUP>, As 3.516 (0.002<SUP>-1</SUP>9.481) mg kg<SUP>-1</SUP> 였다. 논토양에서 Cd 함량은 산록경사지에서 가장 높은 반면 Ni과 As 함량은 홍적대지, Zn 함량은 해안평탄지에서 가장 높았다. 또한, Cd, Cu 및 Zn 함량은 미사질식양토에서 미사질양토, 사양토 및 양토 보다 높은 경향이었다.
The management of heavy metals in soil is important for environmental-friendly agriculture and keeping an ecosystem healthy. In this study, we examined the concentrations of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn, and As) in 260 paddy soils sampled from Gyeongnam Province. The concentrations of the heavy metals were 0.143 mg kg<SUP>-1</SUP> (ranged 0.003-0.537) for Cd, 0.322 (0.002-0.986) mg kg<SUP>-1</SUP> for Cr, 25.41 (6.03-76.19) mg kg<SUP>-1</SUP> for Cu, 16.36 (2.63-32.94) mg kg<SUP>-1</SUP> for Ni, 18.67 (4.16-87.02) mg kg<SUP>-1</SUP> for Pb, 71.76 (22.99<SUP>-1</SUP>53.58) mg kg<SUP>-1</SUP> for Zn, and 3.516 (0.002<SUP>-1</SUP>9.481) mg kg<SUP>-1</SUP> for As, respectively. In addition, the concentration of Cd was highest in mountain foot-slope, Ni and As were highest in diluvial terrace, and Zn was highest in marine plains. Higher concentrations of Cd, Cu, and Zn were found in silty clay loam soils compared to silt loam, sandy loam, and loam soils.