A GIS-based study toward forecast of suburban forest change |
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Authors: | Yasuhiro Suzuki Keiji Kimura Tatsuto Aoki |
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Institution: | (1) Aichi prefectural University, Aichi, Japan;(2) Tokyo Metropolitan University, Tokyo, Japan: 3;(3) Hokkaido University, Hokkaido, Japan |
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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.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | carbon fixation environmental assessment forest growth GIS global environment photogrammetry remote sensing |
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