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Spatial variations in larch needle and soil δ15N at a forest–grassland boundary in northern Mongolia
| Title: | Spatial variations in larch needle and soil δ15N at a forest–grassland boundary in northern Mongolia |
| Authors: | Fujiyoshi, Lei Browse this author | | Sugimoto, Atsuko Browse this author →KAKEN DB | | Tsukuura, Akemi Browse this author | | Kitayama, Asami Browse this author | | Lopez Caceres, M. Larry Browse this author | | Mijidsuren, Byambasuren Browse this author | | Saraadanbazar, Ariunaa Browse this author | | Tsujimura, Maki Browse this author |
| Keywords: | Carbon-13 | | forest | | grassland | | isotope ecology | | nitrogen cycle | | nitrogen-15 | | tree |
| Issue Date: | 2016 |
| Journal Title: | Isotopes in Environmental and Health Studies |
| Volume: | 53 |
| Issue: | 1 |
| Start Page: | 54 |
| End Page: | 69 |
| Publisher DOI: | 10.1080/10256016.2016.1206093 |
| Abstract: | The spatial patterns of plant and soil δ15N and associated processes in the N cycle were investigated at a forest–grassland boundary in northern Mongolia. Needles of Larix sibirica Ledeb. and soils collected from two study areas were analysed to calculate the differences in δ15N between needle and soil (Δδ15N). Δδ15N showed a clear variation, ranging from −8‰ in the forest to −2‰ in the grassland boundary, and corresponded to the accumulation of organic layer. In the forest, the separation of available N produced in the soil with 15N-depleted N uptake by larch and 15N-enriched N immobilization by microorganisms was proposed to cause large Δδ15N, whereas in the grassland boundary, small Δδ15N was explained by the transport of the most available N into larch. The divergence of available N between larch and microorganisms in the soil, and the accumulation of diverged N in the organic layer control the variation in Δδ15N. |
| Rights: | This is an Accepted Manuscript of an article published by Taylor & Francis in ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES on 2017, available online: http://www.tandfonline.com/doi/full/10.1080/10256016.2016.1206093 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/73948 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 藤吉 麗
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