Dissolved organic matter originating from the riparian shrub Salix gracilistyla
Journal of Forest Research 12 巻 1 号
68-74 頁
2007-02 発行
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タイトル ( eng ) |
Dissolved organic matter originating from the riparian shrub Salix gracilistyla
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作成者 |
Shikenya Shozo
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収録物名 |
Journal of Forest Research
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巻 | 12 |
号 | 1 |
開始ページ | 68 |
終了ページ | 74 |
抄録 |
Abstract To estimate the importance of leaching of dissolved organic matter (DOM) as a pathway through which organic matter is supplied to stream ecosystems, we examined the amount of leachate over time and chemical properties of DOM leached from leaves in different conditions (i.e., green leaves, yellow senescent leaves, and leaf litter) of Salix gracilistyla Miq. the dominant riparian plant species in the middle reaches of rivers in western Japan. We analyzed dissolved organic carbon (DOC), total sugar and polyphenol in the leachate of leaf samples collected from a fluvial bar in the middle reaches of the Ohtagawa River in Hiroshima Prefecture, Japan. A considerable leaching of DOC from senescent leaves (37.3 mg g-1 d. w. leaf) and leaf litter (8.1 mg g-1 d. w. leaf) occurred within 24 h after the immersion. In contrast, DOC leached from green leaves was negligible until 1 wk after leaf immersion. Carbon loss of leaves by leaching within 24 h after leaf immersion was estimated to be less than 8%, suggesting that leaching of DOC from S. gracilistyla leaves is a minor pathway through which organic matter is supplied to stream ecosystems. DOM leached from the leaves included sugar and polyphenol, which were among the major chemical forms of DOM leached from the leaves (based on the molecular mass). In a laboratory experiment in which the difference in the stability of DOM between the chemical forms was examined, sugar decomposed more rapidly than polyphenol.
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著者キーワード |
Dissolved organic matter (DOM)
Leaching
Leaf litter
Riparian vegetation
Salix gracilistyla
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NDC分類 |
林業 [ 650 ]
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言語 |
英語
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資源タイプ | 学術雑誌論文 |
出版者 |
Springer Japan
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発行日 | 2007-02 |
権利情報 |
Copyright (c) 2007 Springer "The original publication is available at www.springerlin.com"
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出版タイプ | Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版) |
アクセス権 | オープンアクセス |
収録物識別子 |
[ISSN] 1341-6979
[DOI] 10.1007/s10310-006-0254-3
[NCID] AA11074682
[DOI] http://dx.doi.org/10.1007/s10310-006-0254-3
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