RESEARCH INTERESTS：The influence of catchment hydrology, ecosystem processing, surface water quality, land-use and land management changes and global climate change on the sources, transformations and fate of organic matter in terrestrial and aquatic environments. The application of a diverse array of  analytical and experimental techniques to answer hypothesis-driven questions including spectrophotometric techniques (e.g. absorbance and fluorescence), elemental and biochemical compositions (e.g. amino acids and lignin phenols) and stable and radioisotopes (e.g. ¹³C, ¹⁴C, ¹⁵N) to characterize organic matter sources, degradation histories and to delineate organic matter  dynamics in different environments.