地理科学 ›› 1987, Vol. 7 ›› Issue (3): 238-247,295.doi: 10.13249/j.cnki.sgs.1987.03.238

• 论文 • 上一篇    下一篇

东北地区日照和相对湿度的优势分布型及其分区

赵焕宸   

  1. 中国科学院长春地理研究所
  • 出版日期:1987-05-20 发布日期:1987-05-20

THE DOMINANT DISTRIBUTION PATTERNS AND REGIONALIZATION OF SUNSHINE AND RELATIVE HUMIDITY IN THE NORTHEAST CHINA

Zhao Huanchen   

  1. Changchun Institute of Geography, Academia Sinica
  • Online:1987-05-20 Published:1987-05-20

摘要: 本文采用主成分分析法,对日照时间和相对湿度进行解析,明确了各要素地域变动的优势分布型,并对其形成原因和过程进行动力学考察.同时,对表示各气候要素地域变动优势分布型兴衰有关联的特性值进行聚类分析,作成日照时间和相对湿度变动特性的分区图.

Abstract: Through the principal component analysis of two climatic elementssunshine and relative humidity,the dominant distribution patterns both of perennial sunshine duration deviation(3)and perennial relative humidity(Fig. 3)in the northeast region were defined.The author used the results derived from the principal component analysis of perennial monthly mean atmospheric pressure(Fig.1)to explain the cause and process forming dominant distribution patterns of perennial sunshine deviation(Fig.2)and relative humidity deviation(Fig.4),and approach the regional characteristics of two climatic elements with time change.The similarity(distance Fig.5)among the clusters was obtained with the group average method and based on the time changing eigenvalues(factor loading)of principal components of sunshine and relative humidity correlated respectively with sunshine and relative humidity in observation stations and points.The author took the similarity as the comprehensive indexes for regionalization to map the regionalization of time changing characteristics of sunshine(Pig.6)and the regionalization of time changing characteristics of relative humidity(Fig.7)in the northeast region.Finally,the author pointed out that using the cluster analysis method of principal components to regionaliza the climatic elements was a new method for regionalization.therefore,it is of great significance in the research on regional climatic characteristics,especially on regionalization or classification theory,and in the practical application of qualitative system combined with quantitative system.