Abstract
Combining historical white and black aerial photo with more recent LiDAR and high resolution imagery, this research mapped wetland with high accuracy from 1930s to 2010s in object-based image analysis approach (OBIA). This research shows good potential in combining grey level information with OBIA method to map accurate historical wetland. We found that there were more small wetlands in 1938, but more large wetlands in 1978. In 2011, there were similar amount of small wetlands with 1938. Though 2011 had fewer large wetlands than 1978, 2011 year's individual large wetland had much larger area than those in 1978 and thus contributed to much larger total wetland area in 2011 than in 1978. We found significantly increasing precipitation and decreasing temperature over the time series, also drought in 1938, and this may explain wetland change well.
Original language | English (US) |
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Title of host publication | International Geoscience and Remote Sensing Symposium (IGARSS) |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 4343-4346 |
Number of pages | 4 |
ISBN (Electronic) | 9781479957750 |
DOIs | |
State | Published - Nov 4 2014 |
Event | Joint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014 - Quebec City, Canada Duration: Jul 13 2014 → Jul 18 2014 |
Publication series
Name | International Geoscience and Remote Sensing Symposium (IGARSS) |
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Other
Other | Joint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014 |
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Country/Territory | Canada |
City | Quebec City |
Period | 7/13/14 → 7/18/14 |
Bibliographical note
Publisher Copyright:© 2014 IEEE.
Keywords
- LiDAR
- OBIA
- Wetland mapping
- historical aerial photo