Yasuhiko Shimomura

A Study on Developmental Process in Satoyama Preservation Activities by Civic Groups

This study is aimed at finding measures for the sustainable development of Satoyama preservation activities. First, questionnaires were distributed to various civic groups working for Satoyama preservation in Osaka prefecture, asking if there were any difference in group size and activities between the beginning and the present and how different they were. Next, among the valid responses, the groups that showed any improvement in their management forms were selected, and interviewed on how they had carried out their activities and developed their management system. Then, by noting the time period when major changes had occurred in the management form and clarifying the causes and effects that had been closely related to the operational improvements, any way for sustainable development was studied. The results show that what are needed are; (1) acquiring the knowledge on Satoyama and management skills at earlier stages; (2) introducing programs for considering a variety of relationships between Satoyama and people, whereby Satoyama can be regarded as not only the place to be preserved, but also the one for leisure activities, relaxation, and learning; (3) establishing the administrative function as an independent organization; and (4) having the local government play an administrative role of backing up civic groups in their initial movements as well as serve as a bridge between different organizations of the kind, which will surely help the development of civic groups.

Study on Landscapes Attractiveness to Residents from the Viewpoint of Topographical Features in Agricultural Areas at the Edge of Senboku Hill

This study was conducted to find what landscape was attractive to local residents in a rural area close to an urban city, on the edge of a hill full of farmlands, in terms of topographical features by using a photographic projection method. The results show that the landscape attractiveness to local residents differs depending on the topographical features unique to each local area. On the bottom of the valley, for example, a landscape including a waterway running through the bottom is more attractive to the residents. On the side of the valley, a landscape with step-like paddy fields and slope forests is more attractive. In the depressed or the flat area on top of the valley, pond surfaces or spacious farmlands, which play an important role, as the foreground, of comprising the scenery of slope forests and village houses in the mid distance as well as that of mountains in the far distance, are preferable. These results make it clear that the landform serves as a basis for supporting the attractiveness of the landscape. In addition, cited as favorable aspects by those local residents were, temples and shrines on the valley side, and traditional village houses, stone images of Jizo, lanterns for traditional festivals, as well as temples and shrines in the flat area on the top.

Study on the Environmental Conservation Function of Paddy Field through the Casestudy in Nose-cho, Osaka Prefecture

本研究は, 大阪府能勢町における水田中心の農業・農村空間の生物相保全機能と景観保全機能を評価し, 両評価結果と土地利用特性と地形特性で表される空間特性並びに基盤整備事業の経過年数との関係を探った. その結果, 未整備の棚田地区は景観的価値が最も高い上に帰化植物の侵入率が低く植生の多様度も最も高い結果となった. 一方, 棚田地区で基盤整備が行われた地区では長大法面が発生し景観面に大きな負の影響を与えると共に法面への帰化植物の侵入も多く見られた. 緩傾斜地区では, 基盤整備の整備年代に拘わらず景観的価値はやや高いものの, 整備年代が新しくなるに従って帰化植物の侵入率が高くなり在来種の保全機能が低下する傾向にあった.

Study on the Invigoration of City Parks in Terms on Play Park Activities

In this study, we conducted a survey on play park by interviewing three groups that have organized play park activities at urban parks in the Kansai region, in order to find conditions to be required for the implementation of play park activities at urban parks and how they affect the invigoration of city parks. The results showed; 1 The cooperative relations with museums or other citizen groups such as a park cooperative, which could serve as a bridge between administrative authorities and local residents, were quite useful for play park activities at urban parks. 2 The effects to be brought by those play park activities in terms of the urban park invigoration included; the development of urban parks as a core center for local activities, the promotion of local activities, the encouragement for the residents to utilize existing facilities and set up new facilities in urban parks, the active usage of the overall urban parks in the region, and the creation of a new design to be proposed.

A Study on the Favored Scenery Structure of Citizen in Osaka City

This study was carried out to seek the favored scenery structure of the city dwellers in Osaka City by analyzing the relationship between the scenery and the landform or the land use. As a result, the following becomes clear. First, even if the city accumulation is remarkable in downtown of Osaka, the space composed of natural elements such as the woods, the row, the surface of the water and so on is important. Second, in the commercial area which spreads to the west side on the Uemachi plateau, the city basis facilities such as the avenue which produces rich scenery are important. Moreover, the trenches or the rivers which leave the personality of Water City Osaka are important. Third, in the residential area which spreads to the southern part and the eastern part on the Uemachi plateau, the neighborhood green of human scale and the living scenery from the old days are attractive. Fourth, the characteristic of the Uemachi plateau and the characteristic of the history are lost. Fifth, in the industrial area which spreads to the estuary part and on the sea, the new viewpoint places such as the tall building and the ship appear and the seaside becomes a valuable viewpoint place.

Study on the Design Method of the Urban Riverfront Space Using the Computer Graphics

本研究では, コンピュ-タグラフィックスを用いて, 都市河川の基本構造モデルと修景緑化モデルを作成し, モデル画像を刺激媒体とした心理実験を通じて今後のスーパー堤防化に伴う都市河川の空間整備に関する課題と方向性を探った。その結果, 都市河川の空間整備に際しては, 河川空間のみならず沿川の建物の高さとの関係を考慮した一体的空間として景観形成を図ることが重要であること, 流路線形が曲線線形で河川幅と沿川の建物の高さとの比率が3.0程度であることが望ましいスケール感を創出する可能性があることや高水敷, 堤体の両方に芝生緑化を導入し, 建物の前面に高木緑化を導入することが総合的な快適性を高めることが明らかとなった。

Study on the Street Greenery to bring about the Urban Landscape Development

本研究では, 歩道景観の多面的な評価と21、道部の壁面状況及び視野内に占める街路樹の高木・低木別緑量との相互依存関係について考察した。その結果, 歩道景観の評価に際し, 沿道部の壁面状況や緑化状況が評価にかなり影響することや概して高木の緑量の方が低木の緑量に比較して評価に対する影響度合が大きいことを明らかにし, これらの考察結果から都市景観形成に係る街路緑化手法に関する多くの知見を得た。

Study on Changes in Structure of Open Spaces Due to Housing Complex Reconstruction in Senri New Town

In this study, we investigated changes in quantity and function of open spaces before and after housing complex reconstruction in the areas of Senri New Town where there were concentrations of rebuilt housing complexes, and sought out the challenges in open space renovation accompanying housing complex rehabilitation. The results revealed that, in the areas where suppliers of rebuilt housing complexes changed from the public sector to the private sector, both the total area of green spaces and the ratio of green coverage were the same as before the reconstruction of housing complexes. The area of greenery on natural ground and the ratio of tree coverage decreased, while those on artificial ground increased. In the areas where the public sector rebuilt housing complexes, the openness of open spaces remained intact, but their availability declined because of the drastic decrease in green area and the subdivision of open squares after the reconstruction.

Study on Developmental Processes of City-planning Activities Initiated by Residents in Kanaoka-cho, Sakai City

This study was intended to find conditions required for promoting the city-planning on the initiative of residents, by clarifying the developmental processes in the citizen-led city-planning in Kanaoka-cho, Sakai City, which is located in an urban fringe area. According to our analysis of the results, the city-planning activities were found to be categorized into five stages: 1. the primary period of proposition initiated by residents, 2. the period of recognizing and sharing the problems of the local community, 3. the period of determining principles on the city-planning, 4. the period of making a vision on the land use, and 5. the period of setting about the specific activity. It is also revealed that in order to promote the progress in each phase, it is necessary to recognize and share the problems, and to improve the community organization as a decision-making body making an agreement with the principles or the vision. And also it is important to connect closely with administrative bodies or universities that give them technical advice appropriately.

震災復興住宅の入居初期段階における居住者による自発的な緑化活動に関する研究(平成14年度 日本造園学会研究発表論文集(20))

震災復興住宅を対象に, 団地空間分類毎に入居初期段階での居住者による緑化活動状況を把握し, 緑化主体に対するアンケート調査を通じて, 緑化活動と関連づけた住環境づくりの課題と方向性を探った。その結果, 緑化植物は観賞用植物が多く, 屋外空間の修景に対する居住者の関心の高さが伺えた。緑化主体は個人による緑化が多いが, 入居初期段階でのグループによる緑化も確認でき, ベランダ下は, 個人緑化が主体となり, 観賞園や菜園としての緑化が多く, 遊園や団地出入口は, グループ緑化の活動場所として選択されやすいことが明らかとなった。緑化活性のために屋外空間をハーフメイドに設えることや資金, 材料, 技術支援の有効性を示唆した。