The Distribution of Sesquiterpenes in Pine Needles During Different Growing Periods

The characteristics of biomarkers extracted from needles of the modern living pine with different growing periods were systematically analyzed by GC/MS. Abundant biomarkers were recognized, such as n-alkanes, sesquiterpenes. 15 sesquiterpenes were detected in the pine needles through the characteristic ion fragmentations. From the initial growth(2 months) to wilting(14 months, 26 months), all the sesquiterpenes were detected, and the category did not make any change. The result shows that this kind of compounds are formed mainly in the growth of pine needle leaves. With the increase of growing periods, the relative aboundance with the n-alkanesse clearly decreased. And the result shows that sesquiterpenes with one ring aromatizated are much more easily degraded than the unsaturated two-ring compounds, these detects are excellent records of the related climate information.