Research Interests: •Characterization and pattern of urban-oriented contaminant (organic and inorganic) spectrum over the urbanization processes at a watershed scale; •Biogeochemistry of urban-oriented contaminants and their impacts to surface water quality in wetland ecosystem; •Biogeochemical roles of iron plaque on wetland plant roots; •Invasion mechanisms of alien plants on the basis of microbial community succession in root zone; •Bio-char and biosolid applications.