Spatial variability of heavy metals concentration in cedar (Cedrus deodara) needles in Luoyang urban area.
TIAN Yao-wu1, LIU Zhi-yan2, HAN Li-yang1, YANG Guo-hai1
1College of Forestry, Henan University of Science and Technology, Luoyang 471003, Henan, China|2College of Environment and Planning, Liaocheng University, Liaocheng 252059, Shandong, China