大野川流域における里川の空間構造と心象風景との関係 [in Japanese] RELATION BETWEEN SPATIAL STRUCTURE OF SATOGAWA AND MENTAL SCENERY IN ONO BASIN [in Japanese]
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生物多様性を生み出す里地・里山と同様に，人の暮らしと密接した里川について，大分県南部から中部を流下する大野川流域を対象に以下の3つの視点からその空間構造と心象風景の関係を分析した．<br> 1. 流域内から川と一体的に景観を形成している集落を抽出し，現地調査を行い空間構造を明らかにした．<br> 2. 現地調査を行った里川について，現地調査データをもとに4つのクラスターに分類した．<br> 3. 住民へのアンケート調査およびヒアリング調査をもとに里川景観の特徴を明らかにした．<br> これら分析の結果，河川と人の生活とが調和した里川における景観の復元の方向性を考える上での重要な基礎資料を得る手法を導出した．今後の河川整備における河川景観の創出に活用できると考えている．
In this study, the spatial structures of Satogawa were clarified. Japanese landscape of the river was clarified by comparing the present landscape and mental landscape that residents draw.<br> Onogawa flowing through the central and southern part of Oita Prefecture has been the subject of this research. Surveyed villages estimated to Satogawa were chosen by the following three points. To the first point, village close to the river has been selected. To the second point, village with minimum houses to maintain river was chosen. To the third point, the river flowing through the village which width was less than 100meter more than 5meter was chosen.<br> We surveyed these chosen villages. The items obtained in the field survey were analyzed by mathematical quantification theory class III. Cluster analysis was performed by using the results of the mathematical quantification theory class III. The results of the analysis, Satogawa were classified into four clusters.<br> In the questionnaire survey, answers in all clusters were same answers that there were favorite landscapes nowadays than that of past. Features of favorite landscape were less weeds, wide water surface width and high visibility of the river. There were favorite landscapes in frequently using river section. Satogawa landscapes of each cluster were reproduced by the results of interview about landscape of the past.<br> From the foregoing, the following three points have been clarified. To the first point, spatial structure of Satogawa was clarified. To the second point, Satogawa were classified by the mathematical quantification theory class III and cluster analysis. To the third point, Satogawa landscape image, which is mental scenery, was created by interviews and questionnaire survey, and Guidelines for landscape restoration were shown.
- Journal of Japan Society of Civil Engineers, Ser. D1 (Architecture of Infrastructure and Environment)
Journal of Japan Society of Civil Engineers, Ser. D1 (Architecture of Infrastructure and Environment) 74(1), 15-28, 2018
Japan Society of Civil Engineers