An Investigation of Long-term Variations in Carbon and Water Cycles Using Remote Sensing Datasets: Focusing on Constructed Wetlands in the Korean Peninsula
Abstract
IPCC (2000) reported that wetlands store approximately 20-25 percent of the world's soil carbon although they occupy only 4-6 percent of the Earth's land area, which largely contribute to reduce greenhouse gas emission. It is also known that wetlands relieve potential damages from flooding by heavy rainfall such as typhoons, enable ecosystem drinking water to be secured by improving water quality and have an instrumental role in the net function of ecosystem circulation. In Korea, the Ministry of Environment installed 54 constructed wetlands from 2011 to 2018 as one of the carbon reduction counterplans. However, there is a limited number of studies on quantitative analysis of their carbon and water cycles during a long-term period. In this study, carbon and water cycles in the constructed wetlands were quantitatively analyzed from long-term spatial data in remote sensing datasets. Gross Primary Productivity (GPP), vegetation condition indices (i.e., NDVI, EVI, and LAI) and evapotranspiration dataset were considered to investigate their long-term variations before and after the installation of constructed wetlands. Here, the spatial data from 2000 to 2021 were estimated from MODIS (Moderate Resolution Imaging Spectroradiometer). As one of important evaluation criteria, this study considered the impact of changes in land cover on carbon and water cycle over a long period of time. The results were also compared with long-term spatiotemporal characteristics of natural wetlands in the Korean Peninsula.
Acknowledgement This work was supported by Korea Environmental Industry&Technology Institute (KEITI) through Wetland Ecosystem Value Evaluation and Carbon Absorption Value Promotion Technology Development Project, funded by Korea Ministry of Environment (MOE). (2022003640001)- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2022
- Bibcode:
- 2022AGUFM.H42F1372S