基于主成分分析和多元线性回归的黑龙江省用水效率研究

Study on Water Use Efficiency in Heilongjiang Based on Principal Component Analysis and Multiple Linear Regression

通过专家咨询和实际情况分析,选取影响黑龙江省万元GDP用水量的12个影响因子,构建以万元GDP用水量为因变量的黑龙江省用水效率指标体系。收集黑龙江省2007-2020年12个影响因素数据,基于主成分分析的逐步回归方法,通过spss对原始数据进行线性回归,得到黑龙江省万元GDP用水量和其各影响因素之间的数学模型。结果表明,影响黑龙江省万元GDP用水量最重要的2个指标分别为人均灌溉面积、城镇化率。

Based on expert consultation and actual situation analysis,this paper selects 12 factors that affect the water consumption of Heilongjiang’s 10000 yuan GDP,to construct a water use efficiency index system in Heilongjiang,which takes the water consumption of 10000 yuan GDP as a dependent variable.Data were collected on 12 influencing factors in Heilongjiang from 2007 to 2020,and stepwise regression based on principal component analysis was performed on the original data using SPSS,a mathematical model of the amount of water used by Heilongjiang’s 10000 yuan GDP and its influencing factors was obtained,the results showed that the two most important indicators affecting Heilongjiang’s GDP of 10000 yuan were irrigation area per capita and urbanization rate.