多元统计分析方法在徐州城区公园绿地土壤肥力评价中的应用

Multivariate Statistical Analysis Application in Evaluation Soil Fertility of Park Greenery Plot in Xuzhou City Zone

以徐州市三环路内4个城区的公园绿地土壤为研究对象,采用多元统计分析方法计算得出其土壤肥力因子4个主成份：（1）土壤有机质、土壤氮素因子;（2）土壤磷素、土壤钾素因子;（3）土壤黏粒、土壤容重因子;（4）土壤酸碱度（pH值）因子。再借助SPSS11.5统计软件得出土壤肥力指标权重值及其方差极大旋转后主成份因子得分,最后计算其综合评价得分。结果表明：该城区公园绿地土壤肥力质量情况总体上较差,其中九里区土壤综合肥力水平最高,泉山区次之,云龙区和鼓楼区相差不大。

The paper adopts multivariate statistical analysis application to study the park greenery plot soil in Xuzhou the third ring＇s city zone, the results show that the soli fertility factor＇s four former principal components are： （1）soil oranic, soil nitrogen matter; （ 2 ） soil phosphorus, soil potassium matter; （3） soil text ure, soil unit weight matter; （4） soil acidty and a lka linity. It comes out the weighing value and varimax rotation＇s principal component score in virture of SPSS statical software. The result indicates that the quality of soil fertility in the city zone is poor as a whole,Jiuli section＇s soil fertility ranks first, Quanshan section＇s soil fertility takes second place and the Yunlong section＇s soil fertility is almost the same as Gulou section＇s.