著者

大澤 啓志 島田 正文 勝野 武彦

出版者

農村計画学会

雑誌

農村計画学会誌 (ISSN:09129731)

巻号頁・発行日

vol.24, no.2, pp.91-102, 2005 (Released:2007-03-01)

参考文献数

23

被引用文献数

12 15

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In this research, in order to clarify ecological significance of the levees in flatland paddy fields, the habitat density of the frog, Rana porosa porosa on each levee type was investigated. The investigation was conducted in the Isawa area in the southern part of the Iwate pref. in the early summer in 2002. The number of Rana porosa porosa in the paddy fields that were rearranged to large units in the recent years, has decreased. It has been suggested that the disappearance of traditional earth waterways and the reduction of levees might have caused the decrease of the frog species in the paddy fields. Our research shows that on the levees attached to waterways the number of the frog species significantly varies according to the material that is used for the waterway. That is, the number becomes smaller when it was altered to concrete from the naked soil. At the same time, we did not find any significant difference in the amount of food for this frog species between in the concrete waterways and in the earth waterways. This suggests that the amount of food does not cause the discrepancy between the number of the frog species in the concrete waterways and the number of one in the earth waterways. On the levees between the paddy fields in the area that was consolidated before the recent consolidation, the number of the frog species considerably varies according the moisture condition of the area. This indicates the importance of levees as pieces of land in water, narrow walkways between paddy fields that are filled with water. As opposed to the levees between paddy fields, the levees attached to earth waterways hold high density of the frog species. This verifies that Rana porosa porosa have an affinity to the levees attached to the earth waterways. The significant factors of how this frog species choose what kind of levees to frequent, are more structural, i.e., the structural changes of the paddy fields that are caused by the modern farmland consolidation, the existence of attaching waterways and the material of the waterways, than administrative, i.e., water management and weeding. Also, we verified that the amount of food is not especially a regulative factor in terms of the density of the frog species on the levees.

著者

島田 正文 葉山 嘉一 大澤 啓志 間野 伸宏 岩野 秀俊

出版者

一般社団法人 環境情報科学センター

雑誌

環境情報科学論文集 Vol.29(第29回環境情報科学学術研究論文発表会)

巻号頁・発行日

pp.13-16, 2015-11-25 (Released:2015-11-25)

参考文献数

7

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本研究は,藤沢市で行われた「藤沢市自然環境実態調査」を事例に,地域の生物に関する専門知識を有する市民と研究機関,行政の協働による調査の有効性について実証的に追求したものである。その結果は以下のようにまとめられる。協働の各主体は,調査方法や調査結果の解析・評価に至る全般に渡って関わった。特に,日本大学などの研究機関は,生物の分類群ごとの意見調整から調査全体のとりまとめに至るまで,各主体間の合意形成への中心的役割を果たした。本研究では,組織された3 種類の会議体を通じて,調査方法や結果の活用方法等が主体間で共有化されるなど本調査方法の有効性,調査の持続性等に関わる今後の課題が把握された。

著者

小島 仁志 福留 晴子 小谷 幸司 島田 正文

出版者

日本緑化工学会

雑誌

日本緑化工学会誌 (ISSN:09167439)

巻号頁・発行日

vol.42, no.1, pp.187-190, 2016 (Released:2017-01-30)

参考文献数

7

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神奈川県立境川遊水地公園を対象に,河川水の流入するビオトープエリアの樹木生育分布とその維持管理に関する基礎的調査を行った。その結果,合計で728本のヤナギ類を中心とした種組成を把握し,また河川水の流入口(越流堤)などの管理を要する箇所の整理,また外来種(イタチハギ)や先駆樹種(ヌルデ)の生育分布特性について把握した。以上の樹木生育分布状況に対応した植物管理手法の実施計画案についても報告する。

著者

小島 仁志 佐藤 綾香 金澤 朋子 小谷 幸司 島田 正文

出版者

公益社団法人 日本造園学会

雑誌

ランドスケープ研究 (ISSN:13408984)

巻号頁・発行日

vol.80, no.5, pp.719-722, 2017

被引用文献数

1

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<p>The objective of this study was to evaluate observer's impressions of roost containing behavior and to assess the effectiveness of awareness efforts regarding the conservation of the barn swallow (<i>Hirundo rustica</i>), which is endangered in Japan. In Kanagawa Prefecture retarding park, a group of observers habitually meets to observe the roost containing of the barn swallow, and a questionnaire was administered to 97 participants recruited from this group. Analysis using the semantic differential method revealed the impressions of swallow roost containing to be as follows: 1) There was a high tendency to have a positive impression with or without observation experience. 2) There was a tendency to feel the beauty, a sense of oneness with nature and the life force. The questionnaire description had many comments that awareness regarding swallow conservation has improved, and that observation of the roost containing educates the public about the environment. Observation of the visual scene created by the roost containing the swallows was found to contribute to improving awareness regarding the conservation of swallows in Kanagawa Prefecture.</p>

著者

小谷 幸司 森崎 玲大 金澤 朋子 小島 仁志 島田 正文

出版者

公益社団法人 日本造園学会

雑誌

ランドスケープ研究 (ISSN:13408984)

巻号頁・発行日

vol.80, no.5, pp.479-482, 2017

被引用文献数

1

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<p>We aimed to examine the management method regarding the facilities of Yokohama Zoo based on visitor satisfaction. We employed a questionnaire survey to examine visitor satisfaction in the "African Savannah" area of Yokohama Zoo; the satisfaction trends for weekdays and holidays were analyzed separately. Results show that the majority of visitors comprised middle- to old-aged women on weekdays and families on holidays. Further, visitor satisfaction was generally high, especially in terms of "cleanliness." We also found that visitor satisfaction on weekdays was primarily affected by "variety of animals" and "direction of space," besides some factors excluded from the survey for holidays, such as the "learning effect," "ease of walking on walkways," and "maintenance of landscape plants." The factors affecting visitor satisfaction on holidays also included "va riety of animals" and "direction of space," in addition to some factors excluded from the survey for weekends - "feeling of cleanliness," "descriptions on explanatory signboards," and "maintenance of rest facilities." Based on the above results, we reviewed the management method of the zoo to improve visitor satisfaction and, by extension, to increase the number of visitors.</p>

著者

島田 正文

出版者

社団法人日本造園学会

雑誌

ランドスケープ研究 : 日本造園学会誌 : journal of the Japanese Institute of Landscape Architecture (ISSN:13408984)

巻号頁・発行日

vol.69, no.3, 2006-01-31