{"created":"2024-03-13T05:08:02.039740+00:00","id":2000070,"links":{},"metadata":{"_buckets":{"deposit":"b43b0226-300f-4d51-aa36-148cd84d5dd4"},"_deposit":{"created_by":12,"id":"2000070","owner":"12","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"2000070"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:02000070","sets":["1706970004180:1","87:661:1727312983899:663:1709881364343"]},"author_link":[],"item_12_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"46","bibliographicPageStart":"39","bibliographicVolumeNumber":"203","bibliographic_titles":[{"bibliographic_title":"農業工学研究所技報","bibliographic_titleLang":"ja"},{"bibliographic_title":"Technical report of the National Research Institute of Agricultural Engineering","bibliographic_titleLang":"en"}]}]},"item_12_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Since the 1960's, numerous land consolidation projects have been performed in rural areas in Japan, and many functions for fish habitat have been degraded in the drainage canals. To clarify environment factors required for restoration of fish habitat, we investigated that relationship between morphological and physical environmental factors and fish distribution in 29 drainage canals in Yatsu paddy field of the Shitada-gawa River basin, Chiba Prefecture. Field data were sampled from July 2002 to June 2004 at monthly intervals and analyzed statistically, yielding the following results.\nFirst, one to ten fish species including threatened species in the Red List and Red Data Book of Japan and Chiba Prefecture occurred in the aggregate of 13 main drainage canals during the investigation. Loach Misgurnus anguillicaudatus was found in all drainage canals, and appeared to be the dominant species in this basin. Species richness in the drainage canals appeared to be limited by structural barriers which were 20 cm above the height of drops at the drainage canal junctions with the main stream. Second, comparison of population density of loach in the improved and non-improved drainage canals indicated that drainage canal improvement with land consolidation and inflow of domestic waste water to the drainage canals degraded habitat for loach. Loach population in the improved drainage canals with both walls made of concrete decreased largely during non- and the beginning irrigation periods. To restore the population in the drainage canal, it is important that a substrate armored with gravel be improved to a substrate that can support vegetation.","subitem_description_language":"en","subitem_description_type":"Abstract"},{"subitem_description":"現在，日本の水田は国土面積の約７％（2.7万km2）を占め，農業水路（排水路及び用水路）は一級河川総延長の40倍，約40万kmにも達している。しかし，これまでの都市開発に伴う水田の減少や農薬の多投入等の営農形態の変化，土地及び労働生産性の向上を目指した整備等に伴う用排水分離，水路のコンクリート化，落差工の設置等は，魚類をはじめとする生物生息環境の悪化を招いた（片野，1998；中川，2000）。\n近年，土地改良法の改正にみられるように，環境に対する意識が高まり，事業の実施現場では生物生息環境への配慮が不可欠となっている。そのため，例えば魚道や魚巣ブロック等が設置されるが，その効果は未知な点も多く，未だ魚類の生息分布をはじめ環境との応答関係に関する基礎的知見は不足している。また，これまで水田地域を対象とした魚類研究の多くが，長野県，栃木県，東京都等にとどまっており（例えば，片野ら，2001；中村・尾田，2003；西田・千賀，2004），関東平野に多数存在し，貴重な生物生息空間となっている谷津田地域の事例は数少ないのが現状である。\n谷津田の多くは湿田のため，特有の豊富な生物相を形成してきた（守山，2000）。一方，その空間は浅い谷に拡がる狭小なものであるため，広大な低平地に較べると開発や整備は遅れてきた。これらの理由から，谷津田は現在でもホトケドジョウLefua echigoniaやスナヤツメLethenteron reissneri等の希少種が残る貴重な生物生息空間となっているといえる。谷津田における調査研究は，事例は数少ないものの，生物生息空間の維持・保全を考えていく上で重要である。\n本報告では，農業水路整備と魚類等，生物に適した環境要因保全の解明が求められる中，谷津田の農業排水路を対象とする2年間の現地調査結果に基づき，その形態及び物理環境特性と魚類生息分布との関係について解析した。なお，本報告は小出水ら（2004）にデータを追加して解析後，再度，考察した結果をまとめたものである。\n現地調査においては千葉県大栄町農政課のご理解をいただき， 関係各位の多大な協力を得た。U . S .Geological SurveyのT. J. Waddle博士には英文要旨を校閲していただいた。本報告はプロジェクト研究「流域圏における水循環・農林水産生態系の自然共生型管理技術の開発」及び科学研究費補助金（若手研究B）「農業用水路の魚類生息場としての機能解明：水理環境の季節変動と魚類生活史に関連して」の一部として行った。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_12_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/0002000070","subitem_identifier_reg_type":"JaLC"}]},"item_12_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"独立行政法人農業工学研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"NATIONAL INSTITUTE FOR RURAL ENGINEERING INDEPENDENT ADMINISTRATIVE INSTITUTION","subitem_publisher_language":"en"}]},"item_12_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-3314","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"KOIZUMI, Noriyuki","creatorNameLang":"en"},{"creatorName":"小出水, 規行","creatorNameLang":"ja"},{"creatorName":"コイズミ, ノリユキ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"KOIZUMI","familyNameLang":"en"},{"familyName":"小出水","familyNameLang":"ja"},{"familyName":"コイズミ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Noriyuki","givenNameLang":"en"},{"givenName":"規行","givenNameLang":"ja"},{"givenName":"ノリユキ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"60301222","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=60301222"},{"nameIdentifier":"read0124991","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/read0124991"}]},{"creatorNames":[{"creatorName":"TAKEMURA, Takeshi","creatorNameLang":"en"},{"creatorName":"竹村, 武士","creatorNameLang":"ja"},{"creatorName":"タケムラ, タケシ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"TAKEMURA","familyNameLang":"en"},{"familyName":"竹村","familyNameLang":"ja"},{"familyName":"タケムラ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Takeshi","givenNameLang":"en"},{"givenName":"武士","givenNameLang":"ja"},{"givenName":"タケシ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"20373227","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=20373227"},{"nameIdentifier":"taketake0427","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/taketake0427"}]},{"creatorNames":[{"creatorName":"OKUSHIMA, Shuji","creatorNameLang":"en"},{"creatorName":"奥島, 修二","creatorNameLang":"ja"},{"creatorName":"オクシマ, シュウジ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"OKUSHIMA","familyNameLang":"en"},{"familyName":"奥島","familyNameLang":"ja"},{"familyName":"オクシマ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Shuji","givenNameLang":"en"},{"givenName":"修二","givenNameLang":"ja"},{"givenName":"シュウジ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"70414422","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=70414422"},{"nameIdentifier":"oku","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/oku"}]},{"creatorNames":[{"creatorName":"YAMAMOTO, Shori","creatorNameLang":"en"},{"creatorName":"山本, 勝利","creatorNameLang":"ja"},{"creatorName":"ヤマモト, ショウリ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"YAMAMOTO","familyNameLang":"en"},{"familyName":"山本","familyNameLang":"ja"},{"familyName":"ヤマモト","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Shori","givenNameLang":"en"},{"givenName":"勝利","givenNameLang":"ja"},{"givenName":"ショウリ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"30442726","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=30442726"},{"nameIdentifier":"shoriyamamoto","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/shoriyamamoto"}]},{"creatorNames":[{"creatorName":"相賀, 啓尚","creatorNameLang":"ja"},{"creatorName":"アイガ, ヒロヒサ","creatorNameLang":"ja-Kana"},{"creatorName":"AIGA, Hirohisa","creatorNameLang":"en"}],"familyNames":[{"familyName":"相賀","familyNameLang":"ja"},{"familyName":"アイガ","familyNameLang":"ja-Kana"},{"familyName":"AIGA","familyNameLang":"en"}],"givenNames":[{"givenName":"啓尚","givenNameLang":"ja"},{"givenName":"ヒロヒサ","givenNameLang":"ja-Kana"},{"givenName":"Hirohisa","givenNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-03-13"}],"displaytype":"detail","filename":"TRNIREJ203_39-46.pdf","filesize":[{"value":"283 KB"}],"format":"application/pdf","license_note":"©　 国立研究開発法人 農業・食品産業技術総合研究機構\nNational Agriculture and Food Research Organization, Japan","licensetype":"license_note","url":{"url":"https://repository.naro.go.jp/record/2000070/files/TRNIREJ203_39-46.pdf"},"version_id":"b258ec3e-cda9-41e3-bedf-cf6f5d2d22a0"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"谷津田域における農業排水路環境と生息魚類の現地調査 －千葉県下田川流域を事例として－","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"谷津田域における農業排水路環境と生息魚類の現地調査 －千葉県下田川流域を事例として－","subitem_title_language":"ja"},{"subitem_title":"Field research of environmental properties of drainage canal and fish distribution in Yatsu paddy field, Chiba Prefecture","subitem_title_language":"en"}]},"item_type_id":"12","owner":"12","path":["1709881364343","1"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-03-13"},"publish_date":"2024-03-13","publish_status":"0","recid":"2000070","relation_version_is_last":true,"title":["谷津田域における農業排水路環境と生息魚類の現地調査 －千葉県下田川流域を事例として－"],"weko_creator_id":"12","weko_shared_id":-1},"updated":"2024-04-04T07:54:43.091420+00:00"}