How much carbon dioxide does urban vegetation sequester?

We know that CO2 is the most important greenhouse gas that contributes to global warming. And many believe that trees help to sequester (take in) CO2. But do we really know if trees in Singapore offset the CO2 emitted in our city? What type of trees can sequester CO2 best? Is Singapore’s preference for aesthetic palms over woody trees creating an environmental impact?

SMART Research Scientist, Dr Erik Velasco answered these questions and more at the National University of Singapore (NUS) workshop 'Climate Change Challenges in Cities' on 19 Nov 2013. His presentation 'How much carbon dioxide does urban vegetation sequester?' is based on the published paper, done in collaboration with NUS, entitled 'The role of vegetation in the CO2 flux from a tropical uran neighbourhood'.