は、緑地の計画および保全、管理運営と緑化の基本方針を市町村が定める計画である。この計画は、公園緑地だけでなく、地球環境問題から社会的課題など様々な問題への対応が期待されている。しかしながら、市町村の策定数は半数にとどまっている。本研究は、北海道の市町村におけるの策定状況と、緑地の保全と緑化における課題について明らかにすることを目的とした。各市町に、の策定および改定の状況について、質問した。その結果、人口規模の小さい市町では未策定の場合が多く、その理由として問題の少なさ、人員や予算の不足が指摘された。策定済および未策定の市町の両者で、同様の緑地と緑化の問題を抱えており、国や北海道による支援が必要だと考えられた。

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本研究は、「」の計画項目の構造の変遷を、長期的な目標とこれに関連する計画項目の関係性という観点に立ち、計画論的に考察することを目的とするものであり、次の結論を得た。緑地計画が「ビジョン」、「施策の方針」、「実施プログラム」を基本として確立されているという前提に立つと、「」の前身である「緑のマスタープラン」においては、長期的な「ビジョン」と「施策の方針」の創出が主に重視されていた。しかし、実務において、意欲的な「ビジョン」と、実現可能な「施策の方針」との間の乖離が問題とされたため、「」においては、「ビジョン」の設定方法がより自由になるとともに、「実施プログラム」が充実化された。さらに、計画内容を「説明」する役割を担う計画項目が追加されるとともに、「ビジョン」や「施策の方針」を設定する際に計画範囲を限定する計画項目が追加された。また、各種施策が充実化してきたのをうけ、「」において「施策の方針」として扱われる施策の種類も増加したが、これらを通じて、「ビジョン」または「施策の方針」との関係性が不明確な計画項目もみられるようになった。

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「」の策定にあたっては, 緑に関する既定計画とその達成状況を考慮して, 地域の条件に応じて緑地の配置方針をきめ細かく設定する必要がある。
市川市では, 緑地の保全及び緑化の推進に関する施策を実施していくために, 緑地構造や今後の市街地整備の方向等の条件を考慮して各地域ごとに配置方針を検討した。 そして, これらの配置方針にもとづき, 住区における緑地の配置計画や都市緑化推進の施策展開の方向を示した。また, 市北部に残存する斜面樹林については, 傾斜度。樹林の自然性, 景観性の点から保全の優先順位を評価し, 計画の具体化を図った。

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The purpose of this paper is to clarify, how changing functional evaluations of green spaces correlate with road maps of spatial policies in the green space planning process in municipalities. Through surveys about Kawasaki City, Zushi City and Kamakura City in Kanagawa Prefecture, the following trend could be pointed out: Formerly, functional evaluations were conducted for relatively large areas in municipalities, focusing on the overall structure of green spaces. Those evaluations contributed to establishing typologies or divisions over the area, some of which were used as references in road maps of spatial policies. Later however, evaluations were conducted for limited areas in municipalities, where the main issue was relatively small green spaces in local communities. These evaluations contributed to the extraction of specific green spaces for the practical implementation of concrete spatial policies.

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This study evaluated the situation and of the maintenance of the green open space as an example of Maebashi-city in order to consider the policy. The results were as follows; (1) It clarified the questionnaire survey of inhabitants by the evaluation about the green open space to have got the situation that was higher in the merger district area than the before merger district area. (2) It clarified the relationship between "the satisfaction of green open space" and "the evaluation of green open space" in the model by the regression analysis. Particularly, Authors found the important the factor which the green open space of the farm village, the green open space of huge tree group, the green space of history, and the green space of undeveloped woodland near populated area. (3) About the importance of the green policy, authors compared to the before merger district area and the merger district area at same time they compared 60 years of age more and less than 60 years old. The result, the merger district area was able to grasp the tendency that regarded eco-systemic of the green open space as important than the before merger district area.

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A large-scale residential development has been put into practice in the eastern suburb of Sapporo (the Eastern Area) from 1970's.Eight private developers has been developed the Eastern Area with cooperation under the master plan and the development guideline made by the City of Sapporo. One of the characteristic and effects of the development of the Eastern Area is the creation of a large-scale ecological park ( Hiraoka Park), because only small neighborhood parks are usually made under the development guideline in other suburbs of Sapporo.The site of Hiraoka Park includes the natural woodland for biodiversity. Some inhabitants in the Eastern Area are interested in greenery and organize NPO for green conservation.

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This paper aims to clarify a)how concretely policies are expressed as road maps in Green Master Plans and b)what kind of role these policies have played. Investigated plans for a) are those of municipalities in Kanagawa prefecture. It was found out that the policies of Special Green Space Conservation Area and of parks are expressed concretely in more plans than other policies. For b) a case study was conducted on Zushi city in Kanagawa prefecture. In Zushi city there is a road map of Special Green Space Conservation Area, in which the government and citizens expressed their intentions for green space conservation. Later, the government and citizens have tried to refer the contents of this road map to other plans and policies, some of which are by law ought to be prior to Green Master Plans. The contents of the road map were imported to Community Development Plan and then to Comprehensive Plan of Zushi city.

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人口減少を背景とした成熟社会において持続可能性を考慮した環境循環型都市を目指し、重点的整備と縮退のメリハリをつけた市街地の再編が急務である。また、都市計画と都市経営を含めた核政策との連動による実現化に向けて都市マスの展開と運用の検討が必要である。北海道の諸都市では建設初動期より計画的に都市が建設されており、環境循環型都市に向けて良質な都市ストックを活用した都市の再編が求められている。そこで本論では函館市を事例として、１）計画意志の役割を明確にし、２）中心部の位置付けと重点的整備を行っていく都市の構造を捉える視点を提示し３）環境循環型都市への再編に着目した都市の構造と計画の展開を考察することを目的とする。

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Municipal governments in Japan are recommended to put emphasis on the view point of biodiversity in the “Green Master Plan (GMP)”, which is a basic plan for spatial policies for the parks, green spaces environment, and landscape. Since the citizen-participatory biodiversity monitoring is expected to be one of the effective tools to enhance the feasibility of GMP in biodiversity conservation, the authors discussed the role of the citizen-participatory biodiversity monitoring in the GMP by examining the 38 plans. While it was found that a relatively large number of GMPs clarified the role of the citizen-participatory biodiversity monitoring as a tool for public awareness campaign and biodiversity survey, few GMPs utilized the result of citizen-participatory biodiversity monitoring as a reference for setting the goal of the plan. In those few cases, municipal governments work together on citizen-participatory biodiversity monitoring not only with citizens, but also with experts or research institutes to enhance the reliability of data. Based on the results, the authors discussed necessary measures to promote the application of the citizen-participatory biodiversity monitoring to administrative plans such as GMP.

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Agricultural land in urban areas has been increasingly valued in recent times. As a result, the 2017 amendment of the Urban Green Space Conservation Act clarified that agricultural land is an important component of green space in Green Master Plans (GMPs). The purpose of this study is to examine the current status of agricultural land in GMPs and propose the manner in which policies for the conservation and utilization of agricultural land should be positioned in GMPs. This study analyzed 101 GMPs established by large cities in Japan. The conclusions can be summarized as follows. Newer GMPs had positioned agricultural land more clearly, especially in chapters delineating their current status and programs. Further, the programs can be divided into five categories: conservation, utilization of agricultural land, promotion of agriculture, cooperation with urban development, and measures established in the 2017 amendment. It has been proposed that, especially in cities with higher ratio of agricultural land to urbanization promotion areas and without adequate urban park space per capita, GMPs should clarify targets based on more detailed analysis of the current status, as well as have programs utilizing agricultural land in cooperation with urban development.

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