TerraSAR-X을 이용한 동검도 갯벌 주변의 염생식물 모니터링

Title
TerraSAR-X을 이용한 동검도 갯벌 주변의 염생식물 모니터링
Alternative Title
Using Terrasar-X data to monitor halophyte around Donggumdo tidal flat
Author(s)
이윤경; 박정원; 유주형; 원중선
KIOST Author(s)
Ryu, Joo Hyung(유주형)
Publication Year
2009-10-30
Abstract
Salt marsh is generally classified into high and low marshes according to exposure time. High marsh is located in high tidal area affected by land and continuously exposed more than 10 days in a month. Low marsh is inundated more than 360 days annually. Halophyte such as Suaeda Japonica, Phragmites Communis are widely spread around Donggum-do tidal flat. They can be an environmental proxy to study landization or succession of tidal flats. As demineralization of tidal flat proceeds, the colony of halophyte moves seawards where salinity content is relatively high. As morphology of tidal flat is changed, the location and dimension of halophyte patch and their primary species are altered. Precisely locating halophyte patch and identifying dominant species are important to understand the status of tidal flats. Although halophyte has their spectral peak, it is difficult to identify in multispectral images mainly because of relatively low spectral or spatial resolution. TerraSAR-X data are investigated in this study with ANOVA analysis. The relationships between the backscatter coefficient and halophyte/sediment were examined. Significant variations were found within sediment due to the varying saturation and moisture content throughout all images. HH-HV backscatter was better correlated with halophyte than VV-VH mode. Halophyte patch traced in TerraSAR-X image in 2008 were slightly different from lines observed by field trip in 2009. Disagreement of the traced lines could result from temporal difference because most examined halophyte is annual plants. According to sea level change in the tidal flat, the location of halophyte patch can be changed. Although we are not able to verify the accuracy of traced lines from TerraSAR-X image in 2009 due to the lack of dual mode, the results show that halophyte patch can be effectively identified by dual-polarization TerraSAR-X images.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29233
Bibliographic Citation
2009 International Symposium of Remote Sensing, pp.297 - 299, 2009
Publisher
대한원격탐사학회
Type
Conference
Language
English
Publisher
대한원격탐사학회
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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