Potential uses of TerraSAR-X for mapping herbaceous halophytes over salt marsh and tidal flats SCIE SCOPUS

Cited 27 time in WEB OF SCIENCE Cited 30 time in Scopus
Title
Potential uses of TerraSAR-X for mapping herbaceous halophytes over salt marsh and tidal flats
Author(s)
Lee, Yoon-Kyung; Park, Jeong-Won; Choi, Jong-Kuk; Oh, Yisok; Won, Joong-Sun
KIOST Author(s)
Choi, Jong Kuk(최종국)
Publication Year
2012-12-10
Abstract
This study presents a method and application results of mapping different halophytes over tidal flats and salt marshes using high resolution space-borne X-band synthetic aperture radar (SAR) that has been rarely used for salt marsh mapping. Halophytes in a salt marshes are sensitive to sea-level changes, sedimentation, and anthropogenic modifications. The alteration of the demarcations among halophyte species is an indicator of sea level and environmental changes within a salt marsh. The boundary of an herbaceous halophyte patch is, however, difficult to determine using remotely sensed data because of its sparseness. We examined the ecological status of the halophytes and their distribution changes using TerraSAR-X and optical data. We also determined the optimum season for halophyte mapping. An annual plant, Suaeda japonica (S. japonica), and a typical perennial salt marsh grass, Phragrnites australis (P. australis), were selected for halophyte analysis. S. japonica is particularly sensitive to sea level fluctuation. Seasonal variation for the annual plant was more significant (1.47 dB standard deviation) than that for the perennial grass, with a pattern of lower backscattering in winter and a peak in the summer. The border between S. japonica and P. australis was successfully determined based on the distinctive X-band radar backscattering features. Winter is the best season to distinguish between the two different species, while summer is ideal for analyzing the distribution changes of annual plants in salt marshes. For a single polarization, we recommend using HH polarization, because it produces maximum backscattering on tidal flats and salt marshes. Our results show that high resolution SAR, such as TerraSAR-X and Cosmo-SkyMed, is an effective tool for mapping halophyte species in tidal flats and monitoring their seasonal variations. (C) 2012 Elsevier Ltd. All rights reserved.
ISSN
0272-7714
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3394
DOI
10.1016/j.ecss.2012.10.003
Bibliographic Citation
ESTUARINE COASTAL AND SHELF SCIENCE, v.115, pp.366 - 376, 2012
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Subject
SEA-LEVEL RISE; MULTITEMPORAL RADARSAT-1; FORESTED WETLANDS; VENICE LAGOON; SAR; IMAGERY; CLASSIFICATION; BACKSCATTERING; MODEL; BAY
Keywords
salt marshes; TerraSAR-X; halophyte; tidal flats; backscattering coefficients
Type
Article
Language
English
Document Type
Article
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

GOCI-based PAR,Satellite-based Water Quality,Ocean color based Ecological Environment,GOCI 기반 PAR,위성활용 해수표층 수질,해색위성 기반 해수 생태환경

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse