Principal Component Analysis of Soil Physical and Chemical Properties in Successive Eucalyptus Plantation

YE Shaoming; WEN Yuanguang; ZHANG Huidong

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Principal Component Analysis of Soil Physical and Chemical Properties in Successive Eucalyptus Plantation

- Principal Component Analysis of Soil Physical and Chemical Properties in Successive Eucalyptus Plantation
- Bulletin of Soiland Water Conservation Vol. 29, Issue 5, Pages: 101-105(2010)
- 作者机构：
  
  1. 广西大学林学院,广西,南宁,530004
  2. 辽宁省林业科学研究院,辽宁,沈阳,110032
- 作者简介：
- 基金信息：
- DOI：
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- Published：2010
- 稿件说明：
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YE Shaoming, WEN Yuanguang, ZHANG Huidong. Principal Component Analysis of Soil Physical and Chemical Properties in Successive Eucalyptus Plantation[J]. Bulletin of Soiland Water Conservation, 2010, 29(5): 101-105.
DOI：

YE Shaoming, WEN Yuanguang, ZHANG Huidong. Principal Component Analysis of Soil Physical and Chemical Properties in Successive Eucalyptus Plantation[J]. Bulletin of Soiland Water Conservation, 2010, 29(5): 101-105. DOI：

摘要

利用主分量分析法对连栽桉树人工林土壤的理化性质进行分析

确定了影响连栽桉树人工林土壤肥力的主分量因子

并通过连栽桉树人工林主分量因子对不同代次的桉树人工林土壤肥力变化进行了分析。结果表明

各代次桉树人工林0—20cm和20—40cm的土壤主分量影响因子基本相同

由土壤的物理性质和N

K这3大营养元素构成的第一主分量是影响桉树人工林土壤综合肥力的最主要影响因子;桉树人工林在经过3代连栽后

林地土壤的综合肥力较第1、第2代桉树人工林土壤的综合肥力明显下降。研究结果表明

保持连栽桉树人工林地良好的土壤通气透水性和提高土壤N

K养分含量对保持桉树人工林的可持续发展具有重要的意义。

Abstract

To analyze soil physical and chemical properties in successive Eucalyptus plantation

principal component analysis(PCA)is used by determining principal component factors of soil.Principal component factors in different Eucalyptus generations are compared to illustrate the change of soil fertility .Results show that principal components in 0—20 and 20—40 cm soil layers are basically the same in Eucalyptus plantation .The first principal component composed of soil physical properties and the composition of three soil nutrients(N

and K)is the most important factor to soil fertility in the plantation .Integrated soil fertility declines with the increase of crop-rotation generations

especially after the 3rd generation .Integ rated soil fertility is significantly reduced

compared with 1st and 2nd generations .The result indicates that maintaining good soil aeration and water permeability of soil

as well as N

and nutrient contents

is very important for maintaining the sustained and healthy development of Eucalyptus plantation .

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