Effects of Different Vegetation Zones on CH(4) and N(2)O Emissions in Coastal Wetlands: A Model Case Study

The coastal wetland ecosystems are important in the global carbon and nitrogen cycle and global climate change. For higher fragility of coastal wetlands induced by human activities, the roles of coastal wetland ecosystems in CH(4) and N(2)O emissions are becoming more important. This study used a DNDC model to simulate current and future CH(4) and N(2)O emissions of coastal wetlands in four sites along the latitude in China. The simulation results showed that different vegetation zones, including bare beach, Spartina beach, and Phragmites beach, produced different emissions of CH(4) and N(2)O in the same latitude region. Correlation analysis indicated that vegetation types, water level, temperature, and soil organic carbon content are the main factors affecting emissions of CH(4) and N(2)O in coastal wetlands.