半常绿－常绿杨树
semi evergreen-evergreen poplar clone
城市绿化树种
urban greening trees
Urban greening tree specie
Urban afforestation tree species
Urban tree specie
绿化树种
planted tree species
Planting trees
urban planting tree species
green tree species
landscaping tree species
Urban tree species
afforesting tree species
greening tree species
afforestation tree species
Afforested tree species
afforestation plants
greening species
garden trees
Virescence trees
afforestation tree
tree species for afforestirg
the afforestation trees
Landscape plants
greening tree
greening trees
Tree species for forestation
urban afforestation species
乡土野生绿化树种
local wild greening species
几种常见接地的比较
Comparison of Several Usual Earthings