Motoki YAMAYA
Extraction of Land Cover History Information for River Forest Management from Time Series Aerial Photographs
Atsushi RIKIMARU , Kazuyoshi TAKAHASHI
River forest is growing in waterside land. If they grow thick, it will become a cause of various problems in river management. Recently, river forest that grow thick are scattered in waterside land. Therefore, state of vegetation in waterside land is unable to estimate only by field survey. So, widely and quantitatively survey of vegetation state in waterside land is needed.
In this study, state of vegetation in waterside land was analyzed using 7 series aerial photograph images and ground laser scanner data.
As a result of analyzing land cover using aerial photograph images, age of forest and the factor in which trees grew thick were able to estimate. Moreover, as a result of counting ground laser scanner point data classified with altitude, maximum tree height and a thick state were able to estimate.
In these results, we suggested possibility that state of vegetation in waterside land could be grasped quantitatively.
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