professional contributions
| Member, Standing Advisory Group of Nuclear Applications, International Atomic Energy Agency (IAEA) (2004-2012); |
| Scientific Committee Member, ICSU Program Human health and wellbeing in changing urban environment (2012-2014); |
| Chairman, Scientific committee, Singapore Peking Oxford Research and Enterprise (SPORE)-National University of Singapore, Peking University and University of Oxford; |
| Associate Editor, Environment International (2012-), from 2004, editorial board member; |
| Associate editor, Environmental Pollution (2008-2012); from 2004, editorial board member; |
| Advisory Editorial Board: Trends in Plant Science (2009-); |
| Advisor: New Phytologist (2009-); |
| Editorial Board member, Applied and Environmental Microbiology (2011-) ; |
| Editorial Board, then section editor and Marschner review editor, Plant & Soil (2000-2010); |
| Editor or editorial board member of major Chinese environmental and soil science journals (such as Acta Pedologica Sinica, Acta Ecologica Sinica etc.); |