著者

日置 佳之 百瀬 浩 水谷 義昭 松林 健一 鈴木 明子 太田 望洋

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.63, no.5, pp.759-764, 2000-03-30

被引用文献数

7 6

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鳥類の生息環境保全の観点を取り入れた湿地植生計画の立案手法を開発する目的で,国営みちのく杜の湖畔公園のダム湖畔湿地(面積約38ha)において鳥類の潜在的生息地の図化とそれに基づくシナリオ分析を行った。まず,鳥類の分布と現存植生の関係をGISによって分析し,類似の植生を選好する鳥類のグループ(ギルド)を,サンプルエリア内の植生の面積を説明変数とするクラスター分析で抽出した。次に,植生の面積を用いた正準判別分析により,各ギルドが選好する植生の組合せを求め,ギルドの分布予測モデルを構築した。3番目にこれを適用して調査地全域における鳥類の生息地タイプ図を作成した。最後に,人為的に植生を変化させる2種類のシナリオによって,潜在的生息地がどう変化するか予測し,これを基に植生計画を検討した。

著者

河野 勝 日置 佳之 田中 隆 長田 光世 須田 真一 太田 望洋

出版者

Japan Society of Civil Engineers

雑誌

環境システム研究 (ISSN:09150390)

巻号頁・発行日

vol.25, pp.59-61, 1997

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Nowadays, ponds in urban parks as habitats of plants and animals are strongly required in order to maintain biodivesity. The authors investigated on present and past situation of aquatic plants and structure of ponds in urban parks by questionnaires which sent to management staffs of urban parks. 160 sample data from all parts of Japan. were analyzed for clarifying relationships between aquatic plants and some factors of ponds' structures.<BR>Consequently, following relationships became cleared.<BR>(1) Approximately 30% of ponds are made with waterproof sheets and area of them are limited below mostly 10, 000<SUP>2</SUP> The main reason that ponds' area are limited is difficulty of water supply.<BR>(2) Most of the substratum of natural or semi-natural ponds are mud or silt in contrast that gravel used in man made (artificial) ponds.<BR>(3) More than 50% of ponds have only hygrophyte and emerged plants. On the other hands floating plants and benthophyte disappeared in many ponds though they were existed in past. It is considered that floating plants and benthophyte are sensitive for environmental impacts such as eutrophication.<BR>(4) Four structural factors; area of ponds, waterproof, structure of ponds' shore, and origin of ponds are related each other. Also certain relationship between hygrophyte or emerged plants and area of ponds or structure of ponds' shore are recognized. However, these kinds of relationships are not exist between hygrophyte or emerged plantsand waterproof or origin of ponds.