Abstract: In order to identify significant indicators, and thereby reveal the important relationship among the quantitative changes of Hemiberlesia pitysophila, the changes of environmental factors and the hazard degree of masson pine, four standard areas where the Hemiberlesia pitysophila occurred in Fujian Province were selected for the survey. Moreover, six quantitative indicators of Hemiberlesia pitysophila, six environmental factors and the hazard degree of masson pine were investigated, and then the results of investigation were analyzed by using the integrated correlation coefficient analysis. The results showed that environmental factors had significant integrated negative correlation with the quantitative indicators of Hemiberlesia pitysophila: besides total N, total P and temperature, the female adult population density, the male adult population density, and the second instar nymph density were important indicators. Furthermore, quantitative indicators of Hemiberlesia pitysophila had significant integrated positive correlation with the hazard degree of masson pine, but environmental factors had no significant integrated correlation with the hazard degree of masson pine. The various results obtained using the integrated correlation coefficient analysis were very coherent, and basically in line with reality. So, it is concluded that the environmental factors has significant influence on the hazard degree of masson pine, the quantitative change of Hemiberlesia pitysophila has important influence on the hazard degree of masson pine, while environmental factors has little influence on the hazard degree of masson pine. The integrated correlation coefficient analysis with a certain degree of innovation and practicality is scientific and rational, and is worthy of study and popularization.

Key words: Hemiberlesia pitysophila, environmental factors, masson pine, hazard degree, integrated correlation coefficient analysis