Growth quality of urban trees should include exterior growth quality, interior growth quality and anti-natural-calamity ability. To determine the whole growth quality of a tree, it is necessary to observe exterior cha...Growth quality of urban trees should include exterior growth quality, interior growth quality and anti-natural-calamity ability. To determine the whole growth quality of a tree, it is necessary to observe exterior characters of every part of the tree carefully. The hollows of the roots caused by decay or rot can be detected by Resistograph, and the hollows of the trunks can be detected by Resistograph and a stress wave meter.展开更多
文摘Growth quality of urban trees should include exterior growth quality, interior growth quality and anti-natural-calamity ability. To determine the whole growth quality of a tree, it is necessary to observe exterior characters of every part of the tree carefully. The hollows of the roots caused by decay or rot can be detected by Resistograph, and the hollows of the trunks can be detected by Resistograph and a stress wave meter.
