Study On Key Techniques Of Conservation And Transportation Of Cooper In Huangling County Of Yan'an City

After a long historical changes, famous trees became natural and cultural heritage with scientific,cultural and conservation value, which is an important information of ancient natural history and tree physiology. However, after hundreds or even thousands of years of wind and rain baptism, the trees become weaker and decreased. Meanwhile, part of the original site of ancient trees would be subjected to varying degrees of damage during the transplant process because of the rise of city building, that part of the original site of ancient trees were forced to migration.For this reason, the paper choose the case that conservation transplant of Cooper Huangling County in Yan’an City, arborvitae Platycladus orientalis(linn).Franco, cypress Cupressaceae ex situ as the project. Three clear research was conducted on the different stages of the process,which including the Platycladus orientalis transplant before transplantation and rejuvenation, transplant in the process of transportation, after transplantation and rejuvenation.The first stage includs Cooper pruning, root pruning, increased and rejuvenation. The main construction procedure are: determination of soil- Exploration Root Engineering- the first fixed-uprooting engineering- balance trim- circle cut dry digging roots- soil ball construction- trunk protection- nutritional soil backfill- Nutrition instill- cover film- the second fixed- Nutrition instill-spray- before transplantation and rejuvenation, conservation terrain earthworks..The second stage includes Cooper soil ball banding, soil ball steel structure production, lifting and transportation, planting, support and other processes.. The main construction program are: construction site preparation, reinforcement- earth station excavation, lashing- steel structure of production- tree support, fixed- lifting- Transport security- pointing planting- site preparation- after setting conservation and management.The third stage includes Cooper fertilizer, soil, pests, disaster prevention and other processes. The main construction program are: Fertilizer Management- Soil Management- Pest Control- pruning-Disaster Prevention Measures- phenological observations.