应用主成分分析对土壤肥力的评价  

Principal Component Analysis in Soil fertility Assessment

作　　者：张晓 顾凤岐[1] Zhang Xiao;Gu Fengqi(Northeast Forestry University,Harbin 150040,P.R.China)

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2019年第2期47-49,共3页Journal of Northeast Forestry University

摘　　要：以大兴安岭蒙古栎(Quercus mongolica var. mongolica)低质林为研究对象,采用主成分分析法建立不同改造模式下土壤肥力的评价体系,计算各改造样地的综合得分。结果表明:蒙古栎低质林诱导改造后,土壤肥力综合得分最高的是10 m×10 m(G_2),根据评价结果可知林窗改造优于带状改造模式。Taking Quercus mongolica var.mongolica low quality forest in Daxing’an Mountain as the research object,the principal component analysis was applied to establish the evaluation system of soil fertility under different transformation modes,and the comprehensive score of each transformation plot was calculated.The highest score of soil fertility in Q.mongolica var.mongolica low quality forest was 10 m×10 m(G 2).According to the evaluation results,forest window transformation is better than strip transformation mode.

关 键 词：蒙古栎低质林 诱导改造 主成分分析法 土壤肥力 

分 类 号：S714.8[农业科学—林学] S756.5