Research of tree species structure and health assessment of street trees
The tree species structure characteristic and health condition of 78 main road street trees in the central city ( the ring road) of Changchun city was studied by using the method of field observation.The results revealed that Salix babyloni-ca, Populus alba var.pyramidalis and Acer saccharum which accounted for 12.79%、10.99% and 10.53% of the total number 5 897 in research region respectively were the main species of street trees in research region.The average density was 276 per hectare.The average diameter at breast height, average height, average height under living branch and average crown width were 11.7 cm, 742 cm, 201 cm and 347 cm, respectively.The 43.96%of street trees within ring road were in the state of sub-health level.The health plant, unhealthy plant and medium plant accounted for 17.49%, 10.99%and 27.66%, respectively.
street treestree species structurehealth assessmentanalytic hierarchy process
NETL
NSTL
万方数据
维普
