Bioclimatic classification of Isfahan province using multivariate statistical methods
YAGHMAEI L., SOLTANI KOPAEI S., KHODAGHOLI M. INTERNATIONAL JOURNAL OF CLIMATOLOGY, Vol. 29, No. 12, PP. 1850-1861.
The purpose of the present study is to determine bioclimatic zones in Isfahan province using multivariate statistical method. Thirty-nine climatic variables, which were more important in plant ecological conditions (especially Artemisia sieberi and Artemisia aucheri that include more than half of rangeland surface in Isfahan province), were selected and investigated with factor analysis. Results of factor analysis showed the first three factors that explain 92.3% of total variance in selected variables were precipitation, temperature and radiation and wind with 41.91, 40.18 and 10.23% of variance, respectively. According to results and using hierarchical cluster analysis in Ward’s method, bioclimatic >results of this study with the other climatic >climatic >>in comparison with other methods. Beside that precipitation is the most important factor in vegetation distribution of humid and cold and sub-humid and cold regions in west and south parts of Isfahan province. In addition, temperature is the most important factor in vegetation distribution of hyper warm-arid and warm-arid climatic regions in eastern low elevation parts of province. Furthermore, dominant species were determined for each climatic region.