Compare on the Structural Characteristics of Village Roadside Treesin Fujian and Zhejiang Province Influences and protective effects of roadside tree-belt on heavy metal pollution of roadside soils: a case study of major roads in Shanxi Hyperspectral Approaches for Detecting the Roadside Tree Chlorophyll Content Changes at Branches Scale Variation of heavy metal enrichment efficiency in roadside trees of Sophora japonica L. with different diameters at breast height Responses of the urban roadside trees to traffic environment