Publications by authors named "Chun Ngai Chan"
Article Synopsis
- Eutrophication, driven by nutrient pollution, continues to be a serious issue for inland waters, and its effects on greenhouse gas (GHG) emissions are not well understood.
- A study was conducted to observe how GHG emissions changed in small nitrogen-limited agricultural reservoirs after inducing eutrophication from June to September 2021.
- The results revealed distinct responses from different GHGs: carbon dioxide shifted from a source to a sink, nitrous oxide increased slightly, while methane showed no significant change, indicating that the expected rise in GHG emissions due to agricultural fertilization may not occur uniformly across different ecosystems.
Article Synopsis
- * Salinity significantly affects methane cycling, affecting small water bodies more than larger rivers and lakes, leading to inaccuracies in existing emission estimates.
- * Ignoring salinity in methane emissions calculations could result in an overestimation of up to 81%, highlighting the need to account for salinization in future emissions projections.
Inland waters have been increasingly viewed as hotspots for greenhouse gas (GHG) emissions owing to their strong capability to intercept and mineralize carbon from the terrestrial environment. Although small waterbodies in humid subtropical climates have the potential to emit considerable amounts of GHG, their emission patterns have remained understudied. This study involved intensive measurements of carbon dioxide (CO) emissions from a small reservoir and its upstream and downstream reaches located in subtropical Hong Kong.
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