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Short-range-order minerals as powerful factors explaining deep soil organic carbon stock distribution: The case of a coffee agroforestry plantation on Andosols in Costa Rica
https://obihiro.repo.nii.ac.jp/records/4601
https://obihiro.repo.nii.ac.jp/records/460141bea759-3e93-4c14-8fea-cc5734800d13
名前 / ファイル | ライセンス | アクション |
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Fulltext (4.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-01-10 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Short-range-order minerals as powerful factors explaining deep soil organic carbon stock distribution: The case of a coffee agroforestry plantation on Andosols in Costa Rica | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Chevallier, Tiphaine
× Chevallier, Tiphaine× Fujisaki, Kenji× Roupsard, Olivier× Guidat, Florian× Kinoshita, Rintaro× Filho, Elias de Melo Viginio× Lehner, Peter× Albrecht, Alain |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Soil organic carbon (SOC) constitutes the largest terrestrial C stock, particularly in the Andosols of volcanic areas. Quantitative information on distribution of SOC stocks is needed to construct a baseline for studying temporal changes in SOC. The spatial variation of soil short-range-order minerals such as allophane usually explains the variability of topsoil SOC contents, but SOC data for deeper soil layers are needed. We found that within a 1 km2 Costa Rican basin covered by coffee agroforestry, SOC stocks in the upper 200 cm of soil were highly variable (24 to 72 kgCm-2). Topsoil SOC stocks were not correlated with SOC stocks present in deeper layers. Diffuse-reflectance mid-infrared (MIR) spectroscopy made possible the analysis of a large number of samples (69 soil profiles, i.e. 598 soil samples) for ammonium-oxalate and sodium-pyrophosphateextractable forms of Al, Fe, and Si, as well as SOC content and bulk density. Using the MIR spectra, we identified two different soil materials, which were identified as allophanic and halloysitic soil material. Allophanic soil occurred on top of the halloysitic soil. The thickness of the allophanic soil material, rich in SRO minerals and related to a young andic A horizon, explained the variability of SOC. This study illustrates that knowledge of topography and pedogenesis is needed to understand and extrapolate the distribution of SOC stocks at landscape scales. | |||||
言語 | en | |||||
書誌情報 |
en : SOIL 巻 5, 号 2, p. 315-332, 発行日 2019-11 |
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出版者 | ||||||
言語 | en | |||||
出版者 | European Geosciences Union | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 21993971 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.5194/soil-5-315-2019 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/). | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 613 |