Use of Balloon Aerial Photography and Airborne Color Near Infrared (CNIR) Video Image for Mapping Vegetation in Kushiro Wetland, Northeast Japan
M. Miyamoto
Japan Society for the Promotion Scienece Post-Dcotral fellow, Biosphere Environment Division, Laboratory of Tropical Ecology Division,National Institute of Environmental Studies
K. Yoshino
Institute of Policy and Planning Science, The University of Tsukuba
K. Kushida
nstitute of Low Temperature Science, Hokkaido Univeristy
T. Nagano
Faculty of International Agricultural and Food Studies,Tokyo University of Agriculture
要旨
Identification and spatio-temporal mapping of temperate-subarctic wetland vegetation is crucial to preserve unique ecosystem, biodiversity and spatial heterogeneity. This study was designed to evaluate the potential of balloon aerial photography to acquire high resolution (15 cm pixel size) imagery and remote sensing techniques for mapping wetland vegetation in Akanuma marsh in Kushiro wetland. Specific objectives were to 1) generate a digital vegetation map by photo interpretation techniques from a set of mosaicked balloon aerial photography and vegetation patches of landscape were analyzed. 2) To classify the vegetation by using airborne CNIR video images based on the mosaicked balloon aerial photography. 3) To investigate the potential of mapping additional species at an off nadir (45 degree) angle. We could classify typical specific and vegetation type, small shrubs mixed with herbaceous plants; moss bogs with pools; dwarf shrubs with sedges: and moss with alpine plants. It seems that balloon aerial photography and CNIR video image are powerful tools for mapping temperate-subarctic wetland vegetation into genus and species level.
