基于主成分分析法的城市绿地土壤障碍因子筛选  

Application of Principal Component Analysis in Screening Soil Obstacle Factors in Urban Green Space

作　　者：朱本国 胡艳燕 杨丽军 王丽娟 陈月 Zhu Benguo;Hu Yanyan;Yang Lijun;Wang Lijuan;Chen Yue(Chongqing Landscape and Gardening Research Institute,Chongqing 401329,China;Chongqing City Garden Greening Engineering Technology Research Center,Chongqing 401329,China;Chongqing Garden Soil Quality Testing Center,Chongqing 401329,China;Chongqing Key Laboratory of Germplasm Innovation and Utilization of Native Plants,Chongqing 401329,China)

机构地区：[1]重庆市风景园林科学研究院,重庆401329 [2]重庆市城市园林绿化工程技术研究中心,重庆401329 [3]重庆市园林土壤质量检测中心,重庆401329 [4]川渝共建乡土植物种质创新与利用重庆市重点实验室,重庆401329

出　　处：《绿色科技》2023年第23期264-268,共5页Journal of Green Science and Technology

基　　金：重庆市科研机构绩效激励引导专项(编号:cstc2022jxjl20017);重庆市城市管理科研项目(城管科字2021第(13)号)。

摘　　要：为了深入了解城市绿地土壤的障碍因子,并为后续土壤的修复和改良提供科学依据,按照行业标准对重庆市主城各区绿地土壤的pH值、EC值、有机质、全氮、全磷、全钾、碱解氮、有效磷、速效钾、容重指标进行了检测。利用Bartlett球形检验、KMO检验和主成分分析法对重庆市主城各区绿地土壤10项检测指标的数据进行了统计和分析。结果表明:各指标之间存在着一定的相关性和差异性,筛选出了有机质、pH值、有效磷、全钾、速效钾、EC值和容重7个影响城市绿地土壤质量水平的关键障碍因子。In order to deeply understand the obstacle factors of urban green space soil and provide scientific basis for subsequent soil restoration and improvement,according to the industry standard,the pH value,EC value,organic matter,total nitrogen,total phosphorus,total potassium,alkali-hydrolyzed nitrogen,available phosphorus,available potassium and bulk density index of green space soil in the main urban areas of Chongqing were detected.Bartlett's sphericity test,KMO test and principal component analysis were used to analyze the data of 10 test indexes of green space soil in the main urban areas of Chongqing.The results showed that there were some correlations and differences among the indexes.Seven key obstacle factors affecting the soil quality level of urban green space were screened out,including organic matter,pH value,available phosphorus,total potassium,available potassium,EC value and bulk density.

关 键 词：主成分分析 城市绿地 土壤障碍因子 筛选 

分 类 号：S158[农业科学—土壤学]