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| 数值分类在关中地区土壤分类中的应用 | |
| 引用本文： | 闫湘,常庆瑞,雷梅.数值分类在关中地区土壤分类中的应用[J].土壤通报,2004,35(6):673-677. |
| 作者姓名： | 闫湘 常庆瑞 雷梅 |
| 作者单位： | 1. 中国农业科学院土壤肥料研究所,北京,100081 2. 西北农林科技大学资源环境学院,陕西,杨凌,712100 3. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | :国家自然科学基金资助项目(49941005) |
| 摘 要： | 选取关中地区12个土壤剖面的15个理化指标,应用主成分分析方法和聚类分析方法对土壤进行了数值分类。研究结果表明,前4个主成分的累计贡献率达到86.41%,取阈值T=4.0,供试12个剖面划分为3类,不同类群之间土壤特性差异明显,类群内部土壤特性相似。数值分类结果与系统分类结果比较,虽然个别土壤的类别出现较大差异,但分类结果基本一致,说明数值分类应用于关中地区土壤分类是切实可行的。 |
| 关 键 词： | 主成分分析 聚类分析 关中地区 土壤分类 |
| 文章编号： | 0564-3945(2004)06-0673-05 |
| 修稿时间： | 2003年9月25日 |
The Application of Numerical Value Taxonomy on Soil Classification in Guanzhong Area |
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| YAN Xiang,CHANG Qing-rui,LEI Mei.The Application of Numerical Value Taxonomy on Soil Classification in Guanzhong Area[J].Chinese Journal of Soil Science,2004,35(6):673-677. | |
| Authors: | YAN Xiang CHANG Qing-rui LEI Mei |
| Institution: | YAN Xiang~1,CHANG Qing-rui~2,LEI Mei~3 |
| Abstract: | Main component analysis and cluster analysis are performed by using 15 physical and chemical indexes of 12 soil profiles in Guanzhong Area. The results indicate that the contribution rate of the first four principal components was 86.41%.The 12 profiles were grouped into 3 types when threshold equal to 4.0(T=4.0).Obvious difference exists in the different groups, whereas the characteristics were similar in the same group. By comparing the numerical value taxonomy and soil taxonomy, it shows that the classification results were basically the same, except the individuals showing relatively huge difference. It is practicable that the numerical value taxonomy applies on soil classification in Guanzhong Area. |
| Keywords: | Main component analysis Cluster analysis Guanzhong Area Soil classification |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |