| 摘要 |
When a tree has special value, there are hazards that vandals will damage the tree, thereby running the risk of killing it. Cemeteries have long been poular with vandals, resulting in damage to many tombstones. The Memorial Grove described in Truong U.S. Pat. No. 5,799,488 resembles a cemetery in that there are long periods when the visitor density is low, thus increasing the probability of vandalism. An installation is provided in which a plurality of potted trees are normally maintained at a level lower than the spectator's level, there being a system so that a potted tree can be placed on a platform and lifted to a level making it suitable for the spectator to see but not touch. Such an installation can be predominantly outdoors, or can utilize a building permitting the potted tree to be exposed to the weather much of the time, while having a shiftable skylight usually maintained in its parked position but shiftable to cover the opening in the roof to thus protect the tree during adverse weather.
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