| 内容提要: |
The migration and fate of dissolve organic matter (DOM) in estuarine ecosystems have gained more attention, due to the important role of the estuary as the bridge of the land and ocean. Photochemical and microbial processes have long been considered as the key routes for the transformation and mineralization of DOM in the aquatic ecosystems. However, how the above processes influencing each other is still poorly understood. In this study, the interaction between photo- and bio-degradation of DOM was investigated in surface water in the Pearl River Estuary in south China. Microbial, photochemical and microbial + photochemical experiments were carried out and monitored by direct measurements of dissolve organic carbon (DOC) and the adsorption spectra of chromophoric dissolved organic matter (CDOM). |