{"id":"https://openalex.org/W1999736243","doi":"https://doi.org/10.1080/20430779.2012.729988","title":"Appropriate frequency and time of day to measure methane emissions from an irrigated rice paddy in Japan using the manual closed chamber method","display_name":"Appropriate frequency and time of day to measure methane emissions from an irrigated rice paddy in Japan using the manual closed chamber method","publication_year":2012,"publication_date":"2012-09-01","ids":{"openalex":"https://openalex.org/W1999736243","doi":"https://doi.org/10.1080/20430779.2012.729988","mag":"1999736243"},"language":"en","primary_location":{"id":"doi:10.1080/20430779.2012.729988","doi":"https://doi.org/10.1080/20430779.2012.729988","is_oa":true,"landing_page_url":"https://doi.org/10.1080/20430779.2012.729988","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/20430779.2012.729988?needAccess=true&role=button","source":{"id":"https://openalex.org/S4210226176","display_name":"Greenhouse Gas Measurement and Management","issn_l":"2043-0779","issn":["2043-0779","2043-0787"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Greenhouse Gas Measurement and Management","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.tandfonline.com/doi/pdf/10.1080/20430779.2012.729988?needAccess=true&role=button","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086701529","display_name":"Kazunori Minamikawa","orcid":"https://orcid.org/0000-0002-4762-8765","observed_orcids":["https://orcid.org/0000-0002-4762-8765"]},"institutions":[{"id":"https://openalex.org/I4210113282","display_name":"National Institute for Agro-Environmental Sciences","ror":"https://ror.org/023kfg220","country_code":"JP","type":"nonprofit","lineage":["https://openalex.org/I1323638106","https://openalex.org/I4210113282"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Kazunori Minamikawa","raw_affiliation_strings":["Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan","institution_ids":["https://openalex.org/I4210113282"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102197946","display_name":"Kazuyuki Yagi","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210113282","display_name":"National Institute for Agro-Environmental Sciences","ror":"https://ror.org/023kfg220","country_code":"JP","type":"nonprofit","lineage":["https://openalex.org/I1323638106","https://openalex.org/I4210113282"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kazuyuki Yagi","raw_affiliation_strings":["Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan","institution_ids":["https://openalex.org/I4210113282"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081643087","display_name":"Takeshi Tokida","orcid":"https://orcid.org/0000-0001-7245-2952","observed_orcids":["https://orcid.org/0000-0001-7245-2952"]},"institutions":[{"id":"https://openalex.org/I4210113282","display_name":"National Institute for Agro-Environmental Sciences","ror":"https://ror.org/023kfg220","country_code":"JP","type":"nonprofit","lineage":["https://openalex.org/I1323638106","https://openalex.org/I4210113282"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeshi Tokida","raw_affiliation_strings":["Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Carbon and Nutrient Cycles Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, 305-8604, Japan","institution_ids":["https://openalex.org/I4210113282"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039820652","display_name":"Bjoern Ole Sander","orcid":"https://orcid.org/0000-0002-7967-6147","observed_orcids":["https://orcid.org/0000-0002-7967-6147"]},"institutions":[{"id":"https://openalex.org/I162210093","display_name":"International Rice Research Institute","ror":"https://ror.org/0593p4448","country_code":"PH","type":"nonprofit","lineage":["https://openalex.org/I1286583668","https://openalex.org/I162210093"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"Bjoern Ole Sander","raw_affiliation_strings":["Crop and Environmental Science Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines","Crop and Environmental Sci. Division International Rice Research Institute DAPO Box 7777 Metro Manila, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Crop and Environmental Science Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]},{"raw_affiliation_string":"Crop and Environmental Sci. Division International Rice Research Institute DAPO Box 7777 Metro Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5013746530","display_name":"Reiner Wa\u00dfmann","orcid":"https://orcid.org/0000-0002-3249-3503","observed_orcids":["https://orcid.org/0000-0002-3249-3503"]},"institutions":[{"id":"https://openalex.org/I162210093","display_name":"International Rice Research Institute","ror":"https://ror.org/0593p4448","country_code":"PH","type":"nonprofit","lineage":["https://openalex.org/I1286583668","https://openalex.org/I162210093"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"Reiner Wassmann","raw_affiliation_strings":["Crop and Environmental Science Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines","Crop and Environmental Sci. Division International Rice Research Institute DAPO Box 7777 Metro Manila, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Crop and Environmental Science Division, International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]},{"raw_affiliation_string":"Crop and Environmental Sci. Division International Rice Research Institute DAPO Box 7777 Metro Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5086701529"],"corresponding_institution_ids":["https://openalex.org/I4210113282"],"apc_list":null,"apc_paid":null,"fwci":1.6975,"has_fulltext":true,"cited_by_count":61,"citation_normalized_percentile":{"value":0.8301556,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":99},"biblio":{"volume":"2","issue":"2-3","first_page":"118","last_page":"128"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11588","display_name":"Atmospheric and Environmental Gas Dynamics","score":0.524399995803833,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11588","display_name":"Atmospheric and Environmental Gas Dynamics","score":0.524399995803833,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12091","display_name":"Peatlands and Wetlands Ecology","score":0.3905999958515167,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10004","display_name":"Soil Carbon and Nitrogen Dynamics","score":0.026200000196695328,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/methane-emissions","display_name":"methane emissions","score":0.9589999914169312},{"id":"https://openalex.org/keywords/diurnal-variation","display_name":"diurnal variation","score":0.8029999732971191},{"id":"https://openalex.org/keywords/measurement-frequency","display_name":"measurement frequency","score":0.8009999990463257},{"id":"https://openalex.org/keywords/time-of-day","display_name":"time of day","score":0.7329999804496765},{"id":"https://openalex.org/keywords/drainage","display_name":"drainage","score":0.49900001287460327},{"id":"https://openalex.org/keywords/heading-stage","display_name":"heading stage","score":0.6140000224113464},{"id":"https://openalex.org/keywords/greenhouse-gas-flux-measurement","display_name":"greenhouse gas flux measurement","score":0.5120000243186951}],"concepts":[{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.7593894004821777},{"id":"https://openalex.org/C167678106","wikidata":"https://www.wikidata.org/wiki/Q5283759","display_name":"Diurnal temperature variation","level":2,"score":0.6182198524475098},{"id":"https://openalex.org/C516920438","wikidata":"https://www.wikidata.org/wiki/Q37129","display_name":"Methane","level":2,"score":0.5842438340187073},{"id":"https://openalex.org/C67592535","wikidata":"https://www.wikidata.org/wiki/Q7481320","display_name":"Drainage","level":2,"score":0.5648393630981445},{"id":"https://openalex.org/C162725370","wikidata":"https://www.wikidata.org/wiki/Q52643","display_name":"Daytime","level":2,"score":0.5646340250968933},{"id":"https://openalex.org/C68709404","wikidata":"https://www.wikidata.org/wiki/Q1134475","display_name":"Flux (metallurgy)","level":2,"score":0.5527516603469849},{"id":"https://openalex.org/C2776937971","wikidata":"https://www.wikidata.org/wiki/Q4384217","display_name":"Heading (navigation)","level":2,"score":0.49151739478111267},{"id":"https://openalex.org/C63991900","wikidata":"https://www.wikidata.org/wiki/Q1469559","display_name":"Diurnal cycle","level":2,"score":0.44765979051589966},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.4427529573440552},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.44188186526298523},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0923805832862854},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.08850264549255371},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.08739420771598816},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.07691389322280884},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.07635891437530518},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1080/20430779.2012.729988","doi":"https://doi.org/10.1080/20430779.2012.729988","is_oa":true,"landing_page_url":"https://doi.org/10.1080/20430779.2012.729988","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/20430779.2012.729988?needAccess=true&role=button","source":{"id":"https://openalex.org/S4210226176","display_name":"Greenhouse Gas Measurement and Management","issn_l":"2043-0779","issn":["2043-0779","2043-0787"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Greenhouse Gas Measurement and Management","raw_type":"journal-article"},{"id":"pmh:oai:cgspace.cgiar.org:10568/42017","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/10568/42017","pdf_url":null,"source":{"id":"https://openalex.org/S4306402055","display_name":"CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1286583668","host_organization_name":"CGIAR","host_organization_lineage":["https://openalex.org/I1286583668"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Minamikawa K, Yagi K, Tokida T, Sander BO, Wassmann R. 2012. Appropriate frequency and time of day to measure methane emissions from an irrigated rice paddy in Japan using the manual closed chamber method. Greenhouse Gas Measurement and Management 2(2-3):118-128","raw_type":"Journal Article"}],"best_oa_location":{"id":"doi:10.1080/20430779.2012.729988","doi":"https://doi.org/10.1080/20430779.2012.729988","is_oa":true,"landing_page_url":"https://doi.org/10.1080/20430779.2012.729988","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/20430779.2012.729988?needAccess=true&role=button","source":{"id":"https://openalex.org/S4210226176","display_name":"Greenhouse Gas Measurement and Management","issn_l":"2043-0779","issn":["2043-0779","2043-0787"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","norway-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Greenhouse Gas Measurement and Management","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Climate action","score":0.9786999821662903,"id":"https://metadata.un.org/sdg/13"},{"display_name":"Zero hunger","score":0.40450000762939453,"id":"https://metadata.un.org/sdg/2"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W1999736243.pdf","grobid_xml":"https://content.openalex.org/works/W1999736243.grobid-xml"},"referenced_works_count":29,"referenced_works":["https://openalex.org/W67313751","https://openalex.org/W191386699","https://openalex.org/W212855041","https://openalex.org/W1485154253","https://openalex.org/W1520428197","https://openalex.org/W1608992375","https://openalex.org/W1909570941","https://openalex.org/W1965408989","https://openalex.org/W1996281453","https://openalex.org/W2007807858","https://openalex.org/W2022239434","https://openalex.org/W2023511085","https://openalex.org/W2036964568","https://openalex.org/W2038437381","https://openalex.org/W2042524391","https://openalex.org/W2049088542","https://openalex.org/W2051833014","https://openalex.org/W2055279934","https://openalex.org/W2056323734","https://openalex.org/W2089805174","https://openalex.org/W2089875691","https://openalex.org/W2107140338","https://openalex.org/W2125940696","https://openalex.org/W2129697873","https://openalex.org/W2133484165","https://openalex.org/W2134145171","https://openalex.org/W2137541415","https://openalex.org/W2161929247","https://openalex.org/W2316669791"],"related_works":["https://openalex.org/W2746360204","https://openalex.org/W1934642382","https://openalex.org/W2115399210","https://openalex.org/W2066540348","https://openalex.org/W2007807858","https://openalex.org/W2013243259","https://openalex.org/W2767527218","https://openalex.org/W4402744616","https://openalex.org/W2038254423","https://openalex.org/W4383599099"],"abstract_inverted_index":{"Rice":[0],"agriculture":[1],"is":[2,206],"a":[3,55,144,158,209,216],"large":[4],"anthropogenic":[5],"source":[6],"of":[7,14,34,51,128,147,157,172],"atmospheric":[8],"methane":[9],"(CH4).":[10],"The":[11,70],"reliable":[12],"estimation":[13,214],"CH4":[15,38,52,76,91,109,149,163],"emissions":[16,39,130,150],"requires":[17],"frequent":[18],"measurements":[19,116,174,192],"to":[20,36,126,211],"trace":[21],"diurnal":[22,72],"and":[23,31,99,190],"seasonal":[24],"variations.":[25],"To":[26],"evaluate":[27],"the":[28,41,65,75,81,87,97,104,108,121,129,133,148,152,162,167,170,186,197,213],"appropriate":[29],"intervals":[30,63],"optimal":[32],"time":[33,101,123,184],"day":[35,119,177,195],"measure":[37],"using":[40,64,132],"manual":[42],"closed":[43,67],"chamber":[44,68],"method,":[45],"this":[46],"study":[47],"analysed":[48],"four":[49],"datasets":[50],"fluxes":[53],"in":[54,74,96,161],"Japanese":[56],"irrigated":[57],"rice":[58],"paddy":[59],"measured":[60],"at":[61,178],"2-hour":[62],"automated":[66,134],"method.":[69,136],"typical":[71],"variation":[73],"flux":[77,92,164],"was":[78,93],"observed":[79,94],"after":[80,166,202],"rice's":[82],"heading":[83],"stage,":[84],"during":[85,120,151,196],"which":[86,111],"daily":[88,191],"time-weighted":[89],"mean":[90,183],"twice,":[95],"08:00\u201311:59":[98],"18:00\u201321:59":[100],"windows.":[102],"During":[103],"flooded":[105,187],"rice-growing":[106,154,188],"period,":[107],"emissions,":[110],"were":[112],"estimated":[113],"by":[114],"weekly":[115,173],"once":[117,175,193],"per":[118,176,194],"10:00\u201311:59":[122],"window,":[124],"corresponded":[125],"93\u2013106%":[127],"calculated":[131],"measurement":[135,141],"In":[137],"contrast,":[138],"no":[139],"regular":[140],"strategies":[142],"produced":[143],"satisfactory":[145],"estimate":[146],"non-flooded":[153],"period":[155,189],"because":[156],"sharp":[159],"increase":[160],"just":[165],"drainage.":[168],"Consequently,":[169],"combination":[171],"approximately":[179],"10:00":[180],"as":[181,208],"local":[182],"for":[185,199],"daytime":[198],"1":[200],"week":[201],"each":[203],"drainage":[204],"event":[205],"recommended":[207],"strategy":[210],"obtain":[212],"with":[215],"\u00b110%":[217],"error.":[218]},"counts_by_year":[{"year":2026,"cited_by_count":8},{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":6},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":9},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":2}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}