{"_buckets": {"deposit": "2e00f3f0-c576-4847-94c1-e38221405983"}, "_deposit": {"id": "12853", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "12853"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00012853"}, "item_9_alternative_title_19": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u8a00\u8a9e\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Estimation of root respiration to a forest-floor CO2 flux using carbon isotopes"}]}, "item_9_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2010-03", "bibliographicIssueDateType": "Issued"}, "bibliographicPageEnd": "67", "bibliographicPageStart": "61", "bibliographicVolumeNumber": "21", "bibliographic_titles": [{"bibliographic_title": "\u540d\u53e4\u5c4b\u5927\u5b66\u52a0\u901f\u5668\u8cea\u91cf\u5206\u6790\u8a08\u696d\u7e3e\u5831\u544a\u66f8"}]}]}, "item_9_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Efflux of soil respired carbon dioxide(CO2) is very important component for the global carbon cycle and dynamics of ^\u003c14\u003eC in environment, and to predict the global climate changes caused by increasing CO2 concentrations in the atmosphere. There are two components that generate CO2 in soil, soil organic matter decomposition and root respiration. Although the former is relatively well understood, the root-derived CO2 efflux has not been evaluated sufficiently. The objective of our research is to estimate depth profile of the root respiration rate. Thus we developed a box model which calculates the depth profile. In this paper, we discussed about the adequacy of calculated result by comparing it to the observed soil respired CO2 flux with trenching method. The result showed that the depth profile of root respiration rate decreased with soil depth. This is attributed to the distribution of fine roots which dominate root respiration. 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