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[目的]探讨农产品产地土壤锌在不同环境质量评价方法中的结果精度,为农产品产地认证提供依据。[方法]以吉林省舒兰市为例,通过实地采样,实验室样品分析,运用单因子污染指数法和基于GIS的空间插值方法,根据绿色食品产地环境质量标准进行农产品产地土壤锌的环境质量评价,并进行方法比较。[结果]基于GIS的土壤锌空间插值环境质量评价方法比传统方法的精度要高;采用基于辅助因子的土壤锌协同克里格插值评价结果比普通克里格精度高;土壤锌和有机质的协同克里格插值评价方法比土壤锌与高程的协同克里格插值评价方法的精度高。[结论]基于GIS空间插值方法的土壤锌环境质量评价结果比传统方法更具科学性和合理性
[Objective] The research aimed to discuss the result precision of soil zinc in different producing areas of agricultural products, and provide the basis for the certification of the origin of agricultural products. [Method] Taking Shulan City, Jilin Province as an example, the environmental quality of soil zinc in the producing areas of agricultural products was determined according to the environmental quality standards of the producing areas of green food by field sampling, laboratory sample analysis, single factor pollution index method and spatial interpolation based on GIS Evaluation, and method comparison. [Result] GIS-based soil zinc spatial interpolation environmental quality evaluation method was more accurate than the traditional method; the zinc-based collaborative Kriging interpolation based on cofactors was more accurate than conventional Kriging; the synergistic effect of soil zinc and organic matter The Kriging interpolation method is more accurate than the synergistic Krieger interpolation method for determining soil zinc and elevations. [Conclusion] The results of soil zinc environmental quality assessment based on GIS spatial interpolation method are more scientific and reasonable than the traditional methods