And the relationship between organic acid compounds and routine chemical compositions, polyphenol and volatile aroma components were analyzed by methods of correlation analysis, cluster analysis, variance analysis and regression analysis.

Solving of the eigenvalue problem is converted into an algebra equation to be solved and the analytical relationships of the three theories are expressed explicitly.

By analysis on relationship between the four phenological(migrant) data from ten stations and climatic elements,it is shown that sunlight hours and the accumulated temperature(≥0℃)are the most important factors influencing settling stage of migrant.