{"created":"2022-07-20T06:28:38.968287+00:00","id":2019372,"links":{},"metadata":{"_buckets":{"deposit":"a0f4865f-c4bf-48d1-bc6e-5df6d1bf20a3"},"_deposit":{"created_by":8,"id":"2019372","owner":"8","owners":[8],"pid":{"revision_id":0,"type":"depid","value":"2019372"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02019372","sets":["1642838163960:1642838338003","1642838403551:1642838406414"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"水田土壌からの亜硝酸ガス(HONO)直接発生フラックスの測定および大気濃度への寄与評価","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Measurements of Nitrous Acid (HONO) Direct Emission from Rice Paddy Soil and Its Contribution to Atmospheric HONO Concentration","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"峰島, 知芳","creatorNameLang":"ja"},{"creatorName":"Minejima, Chika","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"中根, 令以","creatorNameLang":"ja"},{"creatorName":"Nakane, Ray","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"島田, 幸治郎","creatorNameLang":"ja"},{"creatorName":"Shimada, Kojiro","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"利谷, 翔平","creatorNameLang":"ja"},{"creatorName":"Riya, Shohei","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"佐藤, 啓市","creatorNameLang":"ja"},{"creatorName":"Sato, Keiichi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"大山, 正幸","creatorNameLang":"ja"},{"creatorName":"Ohyama, Masayuki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"寺田, 昭彦","creatorNameLang":"ja"},{"creatorName":"Terada, Akihiko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"細見, 正明","creatorNameLang":"ja"},{"creatorName":"Hosomi, Masayuki","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_1522650717957":"en","subitem_1522651041219":"© Japan Society for Atmospheric Environment 大気環境学会"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"HONO"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"direct emission"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"rice paddy"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Filter pack"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"dynamic chamber"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"It has been recently reported that the direct emission of nitrous acid (HONO) from soils can be a significant source of HONO especially during the day when a sufficient HONO source has not been found. In this study, the direct HONO emission from rice paddy soil was measured in the field during the mid-summer drainage period. To investigate the impact of fertilization, the system with a traditional amount of fertilization (the chemical nitrogen fertilizer system) and a non-fertilized system (the control system) were prepared. The maximum flux was 40.4 ng/m^2/s which was observed after the soil oxidation reduction potential (Eh) had increased from negative values to positive values. The flux was higher during the daytime (3.5±0.9 ng/m2^/s) than the nighttime (1.0±0.3 ng/m^2/s). This cannot be explained only by the shift in the chemical equilibrium. The chemical nitrogen fertilizer system had a greater HONO flux than the control system on average. The reason could be that the chemical nitrogen fertilizer system has a lower soil moisture content. It was found that the direct emission amount from rice paddy soils may have a non-negligible impact on the atmospheric HONO concentrations.","subitem_description_language":"en","subitem_description_type":"Abstract"},{"subitem_description":"土壌からの亜硝酸ガス (HONO) の直接発生が昼間に存在する未解明のHONO発生源となり得る可能性が指摘されている。我々は、水田の中干し期間に、ダイナミックチャンバー法とフィルターパック法を用いてHONOの直接発生量を測定した。観測されたフラックスは、先行研究と同様の値で、最大値は40.4 ng/m^2/sであり、土壌の酸化還元電位 (Eh) が負の還元状態から正の酸化状態に変化した後であった。また、フラックスは日中に多く (3.5±0.9 ng/m^2/s)、夜間に少なかったが (1.5±0.3 ng/m^2/s)、フラックスの増大は土壌温度の変化による化学平衡の偏りと気液平衡だけでは説明できなかった。肥料施肥の影響を調べるために、化学窒素肥料を慣行量施肥した系（施肥系）と、無施肥の系（コントロール系）の2系を比較した結果、施肥系の方がコントロール系よりHONOフラックスが平均して大きかった。これは、土壌中のNO_2^－、NO_3^－に差がなかったことから、施肥系の方が土壌の含水率が低かったことが原因として考えられる。今回観測されたフラックスの大気中HONO濃度への影響は無視できない大きさであることがわかった。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"大気環境学会 = Japan Society for Atmospheric Environment"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"PISSN","subitem_1522646572813":"1341-4178"},{"subitem_1522646500366":"EISSN","subitem_1522646572813":"2185-4335"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN10512108"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"大気環境学会誌 = Journal of Japan Society for Atmospheric Environment"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015-11-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6","bibliographicPageEnd":"256","bibliographicPageStart":"249","bibliographicVolumeNumber":"50"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"https://doi.org/10.11298/taiki.50.249"}},{"subitem_1522306287251":{"subitem_1522306382014":"URI","subitem_1522306436033":"http://www.jsae-net.org/"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2022-07-20"}],"filename":"50_249.pdf","filesize":[{"value":"702 KB"}],"url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2019372/files/50_249.pdf"},"version_id":"a0ebd7d4-6c9a-4e7c-9298-03646d48ae1e"}]},"item_title":"水田土壌からの亜硝酸ガス(HONO)直接発生フラックスの測定および大気濃度への寄与評価","item_type_id":"59","owner":"8","path":["1642838338003","1642838406414"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-07-21"},"publish_date":"2022-07-21","publish_status":"0","recid":"2019372","relation_version_is_last":true,"title":["水田土壌からの亜硝酸ガス(HONO)直接発生フラックスの測定および大気濃度への寄与評価"],"weko_creator_id":"8","weko_shared_id":-1},"updated":"2023-08-03T05:35:06.434864+00:00"}