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長野県における湖沼環境の現状:1991年の調査から
http://hdl.handle.net/10091/12407
http://hdl.handle.net/10091/124077f99fd63-81aa-4648-8c9a-6f72a5afe2eb
名前 / ファイル | ライセンス | アクション |
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17-09.pdf (1.2 MB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2011-04-19 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 長野県における湖沼環境の現状:1991年の調査から | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Present State of Lake Environment in Nagano prefecture in 1991 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | Nagano Prefecture | |||||
キーワード | ||||||
主題 | lake environment | |||||
キーワード | ||||||
主題 | eutrophication | |||||
キーワード | ||||||
主題 | water quality | |||||
キーワード | ||||||
主題 | 長野県 | |||||
キーワード | ||||||
主題 | 湖沼環境 | |||||
キーワード | ||||||
主題 | 富栄養化 | |||||
キーワード | ||||||
主題 | 水質 | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_18ws | |||||
タイプ | research report | |||||
著者 |
渡辺, 義人
× 渡辺, 義人× 沖野, 外輝夫× 中本, 信忠× 林, 秀剛× 桜井, 善雄 |
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出版者 | ||||||
出版者 | 信州大学環境科学研究会 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 環境科学年報17:51-62(1995) | |||||
書誌情報 |
環境科学年報 巻 17, p. 51-62, 発行日 1995-03-31 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This report is an out1ine of the lake environment in Na gano pref. in 1991. This is based mainly on the result of “The Fourth National Survey on the Natural Environment conducted by EPA Japan. We took a part in the research on natural lakes in Nagano pref.For this investigation,39 lakes having as urface area larger than 0.01 km' were selected. These many lakeslocate in the northern part of Nagano area. According to the trophic state,39 lakes were classified into five groups (eutrophic: 8,m esotrophic: 13,o ligotrophic: 13,a cidtrophic: 2a nd dystrophic :3) . The natural state of lake environment was judged based on the ratio of the length of natural shore line to the whole length of its shore line. The lake located over 1,500 m have been preserved mostly in the natural state. Most of them were located in special protection areas such as a national park. The lake environment at the lower altitude tends to deteriorate. For example,t he shore line more than 95% of Suwa-ko and Fukami北e(759 and 484 m in altitude,re spectively) has been embanked artificialy The present state of lake environment in N agano prefecture is shown by the parameters related to water quality,s uch as transparency,C hlorophyll-a,C OD,n itrogen and phosphorus. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-7492 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN1054947X | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |