Exponential model was use to fit experimental semi-variogram.Normal kriging was use to predict the spatial distribution of soil arsenic in maize producing area.The results i...

• 应用指数模型拟合经验半变异函数,采用普通克里格法预测了砷元素的空间分布状况,研究表明,本区域砷元素存在明显的空间异质性,污水灌溉是引起土壤砷元素空间变异性最主要的因素。