• 关键词：钙  背景值  半方差函数  克立格插值  土壤表层

• 基金项目：

• 赵士鹏
• 东北师范大学地理系, 长春 130024

• 金伦
• 东北师范大学地理系, 长春 130024

• 摘要：应用地统计学方法研究了中国土壤表层钙元素背景值的空间变异结构,并藉此进行了钙元素背景值的地域估值.结果表明,这种估值方法突出反映了钙元素在中国的宏观变化规律.与趋势面方法相比,具有明显优势.

• Abstract：A spatial variability structure of the environmental background values for element calcium of the topsoil in C_hina was analysed. Based on this, the localized optimal estimation of the environmental background values for element calcium was made. The results showed that this estimation method highlighted a macroscopic variability regularity of the environmental background value for element calcium of topsoil in C_hina. C_ompared with trend surface analysis method, it has obvious advantages.

• Key words：environmental background value  calcium  semi-variogram  kriging estimation  topsoil

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