Carbon sequestration and oxygen release as well as cooling and humidification efficiency of the main greening tree species of Sha River, Chengdu Characters of greening tree species in heavy metal pollution protection in Shanghai The Volatiles of Two Greening Tree Spec ies and the Antimicrobial Activity Study on the absorption capacity of Northeast main greening tree species to As in the atmosphere Study on seasonal variation in carbon isotope composition correspond with soil temperature and humidity and weather factors for main greening tree species The Volatiles of Two Greening Tree Spec ies and the Antimicrobial Activity