USING STABLE ISOTOPES TO IDENTIFY THE SOURCES OF ATMOSPHERIC NITROGEN DEPOSITION IN HONG KONG
Date
2019.09.12
Time
10:30AM-11:00AM
Venue
JL104
Speaker
Miss Yau Yu Yan
Department of Earth Sciences, HKU
Title
Increased eutrophication is one of the environmental threats in Hong Kong coastal marine waters. Sewage discharge, riverine inputs have been identified as the main sources of nutrients in Hong Kong. However, with the increased emissions from nearby factories and use of fertilizers, atmospheric deposition became an important source of nutrients to the coastal waters. This study examines the impact of atmospheric nitrogen deposition to the generation of hypoxia under future emissions scenarios in China coastal waters. Furthermore, using stable isotope of atmospheric dry and wet deposition, we investigate the sources of pollutants and quantifies the seasonal input of nitrogen in Hong Kong coastal waters.
