几种统计学方法在环境影响因子辨识中的应用

摘要

Functions of the correlative analysis,multiple linear regression method and stepwise regression method in identifying environment-affecting factors were compared.With Baiyin City of Gansu Province as an example for analysis,the three methods were used to identify environment-affecting factors of heavy metal pollution of the soil-crop system in the suburbs of the city.Based on results of the experiment,indexes were proposed for selecting plans for remedying contaminated soils in the region under research.%分析比较了相关分析法、多元线性回归法与逐步回归法在环境影响因子辨识中的功能异同点。以甘肃省白银市为例，用3种统计学方法对城郊土壤-作物系统重金属污染影响因子进行判别，提出了研究区土壤污染修复方案选择指标的建议。