Abstract:

As a municipal tree in Hangzhou, Cinnamomum camphora is one of the most important ancient trees in the around West Lake Scenic Area. In order to enhance the protection and management, and strengthen the treatment and rejuvenation for ancient C.camphora, promote the sustainable development of lake landscape, field investigation and determination of protective enzymes on ancient C.camphora from different ages and before/after rejuvenation was researched. The results indicated that: the actual age of ancient C.camphora between 200-299 and 300-499 showed a significant difference from physiological age; the growth potential of ancient C.camphora’ which at age of 300-499 years were better than age of 200-299, while those on the growth and metabolism similar to that of 100-199. The tree age over 500 years of C.camphora weaked markedly. Yellowing leaf made the activities of POD decreased. Rejuvenation played a significant effect on growth potential recovery of ancient C.camphora. After been taking rejuvenation measures such as pests and disease control, trunk nutrient injection fertilization, site conditions improvement, tree-hale repaired, etc, content of chlorophyll and the activities of SOD increased and the MDA contents and the activities of POD decreased. Therefore, determination of the physiological and dynamic observation of daily records before/after rejuvenation for ancient C.camphora were beneficial to enhance the conservation and management level of ancient trees along the around West Lake scenic area.