{"created":"2021-03-01T07:24:13.575672+00:00","id":44514,"links":{},"metadata":{"_buckets":{"deposit":"a1d74437-285e-456b-8f11-0013e408175f"},"_deposit":{"id":"44514","owners":[],"pid":{"revision_id":0,"type":"depid","value":"44514"},"status":"published"},"_oai":{"id":"oai:tsukuba.repo.nii.ac.jp:00044514","sets":["160:2163","160:318","160:6238","3:62:5590:2784"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-09","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"167","bibliographicPageStart":"161","bibliographicVolumeNumber":"11","bibliographic_titles":[{"bibliographic_title":"Hydrological Research Letters"}]}]},"item_5_creator_3":{"attribute_name":"著者別名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"山中, 勤"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"加藤, 弘亮"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"恩田, 裕一"}],"nameIdentifiers":[{},{},{}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The root water uptake profile (RWUP) reflects a plant’s survival strategy and controls evapotranspiration and carbon fluxes. Despite its importance, there is still no reliable method for reconstructing this profile. In this study, we applied and compared two possible approaches to a case study in a conifer plantation: an isotope-calibrated mechanistic model and a mixing model with a bell-shaped approximation. Our results show that, after calibrating the hydrologically-active root density profile, the mechanistic model gave a good estimation of the xylem water isotope delta (δx); even though the measured root density was greater in shallower soils, water uptake occurred throughout the entire soil profile, with more uptake in deeper soils. The RWUPs estimated by the mixing model were different from those estimated by the mechanistic model and were unrealistic. However, when we constrained the minimum thickness of the water uptake zone, there was good agreement between the RWUPs from the two approaches. We can therefore conclude that the mechanistic model calibrated with isotopes gave better results, and that sole use of the mixing model is not recommended unless appropriate constraints are applied.","subitem_description_type":"Abstract"}]},"item_5_publisher_27":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Japan Society of Hydrology and Water Resources"}]},"item_5_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.3178/hrl.11.161","subitem_relation_type_select":"DOI"}}]},"item_5_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/ licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made."}]},"item_5_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-3416","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yamanaka, Tsutomu"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kimura, Takeo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sun, Xinchao"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kato, Hiroaki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Onda, Yuichi"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-12-21"}],"displaytype":"detail","filename":"HRL_11-3.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"HRL_11-3","url":"https://tsukuba.repo.nii.ac.jp/record/44514/files/HRL_11-3.pdf"},"version_id":"cb521449-bab4-4b82-bb90-4e16c52e798c"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Comparing root water uptake profile estimations from an isotope-calibrated mechanistic model and a mixing model","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Comparing root water uptake profile estimations from an isotope-calibrated mechanistic model and a mixing model"}]},"item_type_id":"5","owner":"1","path":["2163","6238","318","2784"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-12-21"},"publish_date":"2017-12-21","publish_status":"0","recid":"44514","relation_version_is_last":true,"title":["Comparing root water uptake profile estimations from an isotope-calibrated mechanistic model and a mixing model"],"weko_creator_id":"1","weko_shared_id":5},"updated":"2022-04-27T09:15:56.861193+00:00"}