Japan Geoscience Union Meeting 2016

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International Session (Oral)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG10] Earth and Planetary satellite observation projects Part II: Satellite Earth Environment Observation

Tue. May 24, 2016 10:45 AM - 12:15 PM 303 (3F)

Convener:*Riko Oki(Japan Aerospace Exploration Agency), Tadahiro Hayasaka(Graduate School of Science, Tohoku University), Kaoru Sato(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Masaki Satoh(Atmosphere and Ocean Research Institute, The University of Tokyo), Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Kenlo Nasahara(Faculty of Life and Environmental Sciences, University of Tsukuba), Takashi Nakajima(Tokai University, School of Information Science & Technology, Dept. of Human & Information Science), Taikan Oki(Institute of Industrial Science, The University of Tokyo), Tsuneo Matsunaga(Center for Environmental Measurement and Analysis, National Institute for Environmental Studies), Yukari Takayabu(Atmosphere and Ocean Research Institute, the University of Tokyo), Hiroshi Murakami(Earth Observation Research Center, Japan Aerospace Exploration Agency), Hajime Okamoto(Kyusyu University), Gail Skofronick Jackson(NASA Goddard Space Flight Center), Paul Chang(NOAA College Park), David Crisp(Jet Propulsion Laboratory, California Institute of Technology), Chair:David Crisp(Jet Propulsion Laboratory), Tatsuya Yokota(National Institute for Environmental Studies)

11:00 AM - 11:15 AM

[ACG10-20] Application of Bio-Optical Model and Satellite Image in Identification and Mapping of Submerged Macrophytes in South-Basin of Lake Biwa, Japan

*Shweta Yadav1, Yosuke Yamashiki1, Minoru Yoneda1, Tamura Masayuki1, Suzaki Junichi1, Kanako Ishikawa2 (1.Kyoto University, 2.Lake Biwa Environmental Research Institute (LBERI))

Keywords:Remote Sensing, Bio-Optical Model, Submerged Macrophytes, Mapping

Abstract
Aquatic macrophytes are important for primary production and environmental protection of marine and fresh water ecosystems. However excessive growth of macrophytes may cause an adverse shift in shallow lakes from clear-water plant-dominated states to turbid algae-dominated state. In order to effectively manage the inland waters and their ecosystem, it is crucial to monitor the community structure and distribution of aquatic macrophytes.
Present study focus on identifying and mapping the submerged macrophyte species dominated in eutrophic south basin of Lake Biwa, using satellite image (Landsat) and bio-optical model. Spectral signature of various submerged macrophytes were generated. Laboratory experiments were conducted to identify the reflectance spectra of the macrophytes at different wavelength, using FieldSpec Spectroradiometer. Result indicates that visible (450-670 nm) and near-infrared (850-880 nm) bands are the significant for spectral discrimination of submerged macrophytes. Image processing software Erdas-Imagine-2013 was used to map the macrophytes species.