{"created":"2023-07-25T11:06:45.286062+00:00","id":10267,"links":{},"metadata":{"_buckets":{"deposit":"0f274609-1369-4ac6-aeff-14157690beb8"},"_deposit":{"created_by":27,"id":"10267","owners":[27],"pid":{"revision_id":0,"type":"depid","value":"10267"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00010267","sets":[]},"author_link":["18078","20314","18075","18077","20318","20317","20306","20321","20312","20320","20313","20309","20316","20319","20308","20323","18079","20311","20315","20307","20322","20310"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2014-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"341","bibliographicPageStart":"327","bibliographicVolumeNumber":"8","bibliographic_titles":[{"bibliographic_title":"Polar Science"},{"bibliographic_title":"Polar Science","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"To better understand the factors controlling the growth of larch trees in Arctic taiga-tundra boundary ecosystem, we conducted field measurements of photosynthesis, tree size, nitrogen (N) content, and isotopic ratios in larch needles and soil. In addition, we observed various environmental parameters, including topography and soil moisture at four sites in the Indigirka River Basin, near Chokurdakh, northeastern Siberia. Most living larch trees grow on mounds with relatively high elevations and dry soils, indicating intolerance of high soil moisture. We found that needle δ13C was positively correlated with needle N content and needle mass, and these parameters showed spatial patterns similar to that of tree size. These results indicate that trees with high needle N content achieved higher rates of photosynthesis, which resulted in larger amounts of C assimilation and larger C allocation to needles and led to larger tree size than trees with lower needle N content. A positive correlation was also found between needle N content and soil NH4+ pool. Thus, soil inorganic N pool may indicate N availability, which is reflected in the needle N content of the larch trees. Microtopography plays a principal role in N availability, through a change in soil moisture. Relatively dryer soil of mounds with higher elevation and larger extent causes higher rates of soil N production, leading to increased N availability for plants, in addition to larger rooting space for trees to uptake more N.","subitem_description_type":"Abstract"}]},"item_10001_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"北東シベリア北極圏タイガ–ツンドラ境界において、カラマツの成長を決める要因を調べるため観測を行った。ほとんどのカラマツはわずかに比高が高く比較的乾燥したマウンド上に生育しており、湿潤耐性が低い事がわかる。葉のδ13Cの空間変化はN含量および葉の質量と正の相関を示し、また樹木サイズも同様の空間変化パターンを示した。葉のN含量が高い木は光合成速度が速く、より多くのCが固定され、葉の質量、樹木サイズが大きくなったと解釈できる。葉のN含量は土壌NH4+プールとも正の相観を示し、利用可能なN量の大きさを示唆していると考えられる。微地形も重要な因子の一つで、比較的乾燥したマウンド土壌では利用可能なN量の生成速度が大きいことに加え、大きなマウンドではカラマツは根をより広く伸ばし栄養塩を吸収できるためである。","subitem_description_type":"Other"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"10.1016/j.polar.2014.07.008"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://doi.org/10.1016/j.polar.2014.07.008","subitem_relation_type_select":"DOI"}}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Liang, Maochang"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sugimoto, Atsuko"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tei, Shunsuke"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Bragin, Ivan V. "}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takano, Shinya"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Morozumi, Tomoki "}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shingubara, Ryo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Maximov, Trofim C."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kiyashko, Serguei I. "}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Velivetskaya, Tatiana A. "}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ignatiev, Alexander V. "}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Liang, Maochang","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sugimoto, Atsuko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tei, Shunsuke ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Bragin, Ivan V. ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takano, Shinya","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Morozumi, Tomoki ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shingubara, Ryo ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Maximov, Trofim C. ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kiyashko, Serguei I. ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Velivetskaya, Tatiana A. ","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ignatiev, Alexander V. ","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"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":"Importance of soil moisture and N availability to larch growth and distribution in the Arctic taiga-tundra boundary ecosystem, northeastern Siberia","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Importance of soil moisture and N availability to larch growth and distribution in the Arctic taiga-tundra boundary ecosystem, northeastern Siberia"},{"subitem_title":"Importance of soil moisture and N availability to larch growth and distribution in the Arctic taiga-tundra boundary ecosystem, northeastern Siberia","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"27","path":["1375"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-11-26"},"publish_date":"2014-11-26","publish_status":"0","recid":"10267","relation_version_is_last":true,"title":["Importance of soil moisture and N availability to larch growth and distribution in the Arctic taiga-tundra boundary ecosystem, northeastern Siberia"],"weko_creator_id":"27","weko_shared_id":27},"updated":"2023-07-25T16:22:23.230381+00:00"}