The Spatial Structures and the Dust Retention Effects of Green-land Types in the Workshop District of Wuhan Iron and Steel Company Patterns of dust retention by five common tree species for urban greening in Aksu City, Northwest China Maximum Dust Retention of Main Greening Trees in Arid Land Oasis Cities, Northwest China Evaluation of ecological services of Populus simonii forest on Heerqin sandy land The dust retention effect of urban vegetation in Huizhou, Guangdong Province