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《Journal of Anhui Normal University(Natural Science)》 2001-04
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THE APPLY OF PRINCIPAL COMPONENT ANALYSIS AND REGRESSION ANALYSIS IN THE ASSESSMENT OF THE QUALITY OF THE PADDY SOIL-MAKE AN EXAMPLE FOR TONGCHENG COUNTY

LI Chang-ai, GU Ye-ping (College of Territorial Resources and Tourism,Anhui Normal University,Wuhu 241000,China)  
The writer fuse principal component analysis and regression analysis into the assessment of paddy soil. The writer choose 24 typical soil species,13 variables(assessment items),and digitize the physical and chemical properties of the soil species. The main factors affecting the productive forces which are selected by principal component analysis are applied to the enter regression.The regression coefficients of the selected factors are used to obtain their weighs and specific assessment indexes.Then the writers assess all the soil species comprehensively and classify them into three grades.The result tallies with the actual situation.
【CateGory Index】: S114
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