地理科学 ›› 1988, Vol. 8 ›› Issue (2): 181-188,200.doi: 10.13249/j.cnki.sgs.1988.02.181

• 问题讨论 • 上一篇    下一篇

福建省境内中、南亚热带之间界线的数值划分

晏路明   

  1. 福建师范大学地理系 福州
  • 出版日期:1988-03-20 发布日期:1988-03-20

THE NUMERICAL DIVISION OF THE BOUNDARY BETWEEN THE MIDDLE AND SOUTH SUBTROPICAL BELTS IN FUJIAN PROVINCE

Yan Luming   

  1. Department of Geography, Fujian Normal University, Fuzhou
  • Online:1988-03-20 Published:1988-03-20

摘要: 本文建立了划分中、南亚热带的Fuzzy综合评判模型,从而确定了福建省境内的中、南亚热带之间界线的最佳位置,客观地、定量地表示出这条界线的过渡状态。在模型中,还运用PCA方法确定了因素的权数分配。

Abstract: The mathematical model of fuzzy comprehensive evaluation of the division between the middle and south subtropical belts is set up to define the most reasonable location of the boundary between the two belts in Fujian Province, and to show the various transitional states near the boundary objectitvely and quantitatively. In the design of the model, some relatively recognized climatic indices and their standards of division are chosen to guarantee single-factor evaluation rationality. In the comprehensive evaluation, the method of principal component analysis(PCA) is applied to determine the weight assignation of related factors, so as to avoid subjectivity and to balance the deviation of the index boundary objectivelyo Finally, the paper discusses the east and west sections of the boundary in dispute, and points out that it is difficult for traditional qualitative methods to explain fuzziness of geographic boundary, while the fuzzy comprehensive evaluation model has its advantages in this respect.