Spatiotemporal-based automated inundation mapping of Ramsar wetlands using Google Earth Engine
Manish Kumar Goyal1, Shivukumar Rakkasagi2, Soumya Shaga2
1Department of Civil Engineering, Indian Institute of Technology, Indore, India. mkgoyal@iiti.ac.in.
Scientific Reports
|October 13, 2023
Summary
Wetland inundation trends in China
Area of Science:
- Ecology
- Environmental Science
- Remote Sensing
Background:
- Wetlands are vital ecosystems supporting diverse flora and fauna.
- Monitoring changes in wetland inundation extent is crucial for conservation.
- Ramsar sites are internationally recognized wetlands of significance.
Purpose of the Study:
- To analyze inundation patterns and trends for all 64 Ramsar sites in China.
- To assess changes in wetland extent from 1991 to 2020.
- To inform conservation strategies for Chinese Ramsar sites.
Main Methods:
- Utilized Landsat imagery from 1991 to 2020.
- Generated annual inundation maps using the short-wave infrared thresholding technique.
- Applied the Mann-Kendall test to determine inundation trends at each site.
Main Results:
- Significant inundation decrease observed in 8 Ramsar sites.
- Significant inundation increase observed in 14 Ramsar sites.
- Analysis achieved an average overall accuracy of 90.0%.
Conclusions:
- Wetland inundation patterns in China show significant variability.
- Conservation strategies are essential for Ramsar sites exhibiting trend changes.
- Long-term remote sensing data is effective for monitoring wetland dynamics.
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