CAJ | 학술논문

采用普通克里金插值法对青岛城区表层土壤中As、Cd等8种重金属元素的空间分布规律进行分析，并用单因子指数法和内梅罗指数法评价土壤重金属元素的累积程度。结果表明：8种重金属元素空间变异各向异性显著，总体上呈现由东北向西南递减的趋势。受重金属影响而明显累积的土壤样点比例较小，为4．7％，土壤环境质量总体上较好。部分位于交通区、工业区和生活区样点的Zn、Hg、Cd、Cr、Cu元素含量超过GB 15618—1995《土壤环境质量标准》三级标准。研究成果可为城市环境规划与管理、城市土壤环境治理与修复等提供参考。
채용보통극리금삽치법대청도성구표층토양중As、Cd등8충중금속원소적공간분포규률진행분석，병용단인자지수법화내매라지수법평개토양중금속원소적루적정도。결과표명：8충중금속원소공간변이각향이성현저，총체상정현유동북향서남체감적추세。수중금속영향이명현루적적토양양점비례교소，위4．7％，토양배경질량총체상교호。부분위우교통구、공업구화생활구양점적Zn、Hg、Cd、Cr、Cu원소함량초과GB 15618—1995《토양배경질량표준》삼급표준。연구성과가위성시배경규화여관리、성시토양배경치리여수복등제공삼고。
Spatial distributions of eight heavy metals ( As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in the top soil in Qingdao city were analyzed by means of the ordinary Kriging, and accumulation of the heavy metals in the soil assessed with the single factor index and Nemerow index methods. Results show that the eight heavy metals are significantly anisotropic in spatial variability, on the whole, displaying a decreasing trend from the northeast to southwest. The proportion of the soil samples showing obvious accumulation as affected by heavy metals contamination is quite low, being 4?7%, and the soil environment quality in general is good. The contents of Zn, Hg, Cd, Cr and Cu in some soil samples around traffic hubs and in the industrial zones and living quarters are over Grade Ⅲ criteria of the National Standard for Soil Environment Quality . The findings of the study may serve as reference for decision making in urban environmental planning and manage?ment, and urban soil remediation.