| Co-Investigator(Kenkyū-buntansha) |
OGUCHI Takashi University of Tokyo, Associate Professor, 空間情報科学研究センター, 助教授 (80221852)
KIMURA Keiji Tokyo Metropolitan University, Associate Professor, 理学研究科, 助教授 (30294276)
SUZUKI Yasuhiro Aichi Prefectural University, Associate Professor, 情報科学部, 助教授 (70222065)
ONDA Yuuichi Tsukuba University, Lecturer, 地球科学系, 講師 (00221862)
SUGIMORI Hiroaki University of Tokyo, Research Associate, 空間情報科学研究センター, 助手 (70302776)
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| Research Abstract |
At a time when the concept of "human and environmental symbiosis" has taken on much significance, protection of suburban forests (i.e. forests adjacent to or near developed areas) is a topic that has drawn much attention. Suburban forests have, since ancient times, been places where people have gathered firewood and cultured trees. As a result, the vegetation of suburban forests is only partially natural and continues to change as the forms of human activity in and around them changes. Accurate forecasts of how suburban forests will change are, therefore, an important element in the debate over how to protect them.
In this study, a suburban forest was analyzed with laser radar sensing, multi-spectrum scanning, digital photogrammetry analysis, aerial photograph interpretation, and a field survey. Data gathered using these techniques were compiled on a GIS to forecast future changes in the forest. Aerial photographs taken over the past 50 years were analyzed to illuminate changes in the forest over that period. Specifically, comparisons of precise Digital Elevation Models (DEMs) measured by using digital photogrammetry workstations made it possible to estimate growth in forest height. The possible future conversion of such results to estimates of amounts of carbon dioxide consolidated by forests should be very significant for discussions of global environmental problems.
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