主成份分析在研究草原土壤养分评价中的应用  

APPLICATION OF MAJOR COMPONENT ANALYSIS TO EVELUATE THE STUDY OF GRASSLAND SOIL FERTILITIES

作　　者：何婕平 康师安[1] 

机构地区：[1]内蒙古林学院基础部

出　　处：《内蒙古林学院学报》1994年第2期52-57,共6页

基　　金：科学院科研基金

摘　　要：本文运用主成份分析方法评价草原土壤养分含量规律。相关矩阵显示出土壤养分间的单相关关系。从第Ⅰ、Ⅱ主成份中进一步理解全氮和有机质是各种养分因子中起主导作用的因子。可得出五个土壤养分等级类型。此结论符合土壤学理论。The application of major component analysis to evaluate content of soil nutrient is the further research of the content of soil nutrient,The corrlation matrix shows a single correlation relation among soil nutrient,From the major component of partⅠand part Ⅱ we know that the total N and orgenic is the major factor that plays an important part in all kinds of nutrients,From the picture we can see the five types of the grade of soil nutrient,which accords with the theory of soil science.It needs farther study in the result of culculations and explanation.

关 键 词：土壤 主成份分析 土壤养分 草原 

分 类 号：S158.3[农业科学—土壤学] S812.2[农业科学—农业基础科学]