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应用生态学报 ›› 1992, Vol. 3 ›› Issue (3): 215-222.

• 研究论文 • 上一篇    下一篇

中国东北地带性顶极植被类型及其预测判别模型--动态地植物学说的继承与发展(Ⅰ)

徐文铎, 常禹   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1992-01-14 修回日期:1992-04-10 出版日期:1992-07-25 发布日期:1992-07-25

Zonal climax vegetation types in northeast China and their predicted discriminant model

Xu Wendo, Chang Yu   

  1. Institute of Applied Ecology,-Academia Sinica, Shenyang 110015
  • Received:1992-01-14 Revised:1992-04-10 Online:1992-07-25 Published:1992-07-25

摘要: 本文根据刘慎谔的动态地植物学说原理,采用主成分分析法(PCA)和多组判别分析法(MGDA)研究了东北地区地带性顶极植被类型与气候指标的关系:1)以东北地区210个气象站的7个气象因子为变量,组成210×7矩阵,用PCA方法进行分类和排序,其结果明显划分7个地带性顶极植被类型,2)影响地带性顶极植被类型的形成和分布的气候因子,主要是热量和水分条件以及二者的组合状况;3)确定了7个地带性顶极植被类型的水热指数分布范围和特征;4)采用MGDA法建立了判别函数模型,预测了东北地区地带性顶极植被类型,其准确率可达90.32%。

关键词: 地带性顶极植被类型, 主成分分析, 多组判别分析

Abstract: Based on Liu Shenge's geobotanical principles, the relationship between zonal climax vegetation types and climatic indices is studied with principal component analysis (PCA) and multiple group discriminant analysis(MGDA)methods.7 zonal climax vegetation types are divided according to the classification and ordination of. 7 meteorological factors in 210 msteorological stations. The temperature, precipitation and their various combinations are the main climatic factors affecting the formation and distribution of zonal climax vegetation types, The distribution ranges and their characteristics of hydrologic and thermal indices are defined, and the discriminant function model is established and used for predicting the zonal climax vegetation types with the accuracy of 90.32%.

Key words: Zonal climax vegetation type, Principal component analysis, Multiple group discriminant analysis