TU Cong. Ph. D., a research specialist at the Plant Pathology Department of North Carolina State University, USA. His research has focused on soil chemistry of heavy metals, phytoremediation of metal-contaminated soils, soil microbial ecology in sustainable agriculture, and plant-microbe interactions and responses to global change components. He has authored or co-authored over 70 publications in peer-reviewed journals， such as Nature, Science, Global Change Biology, Soil Biology and Biochemistry, Agriculture Ecosystems & Environment, Journal of Environmental Quality, etc.