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タイトルヨミ
コヤマイケ テイシツ チュウジョウ シリョウ ノ リュウド ゼン ユウキ タンソ ノウド オヨビ CNヒ ヘンカ
タイトル別表記
Vertical Change in Grain-size, Total Organic Carbon and C/N Ratio of the Core Samples from Lake Koyama-ike, Tottori Prefecture, Southwest Japan
ファイル
言語
日本語
著者
作野 裕司
髙安 克已
赤木 三郎
西田 良平
田中 善蔵
村田 祐司
浅村 久志
浜田 哲弘
内容記述(抄録等)
Two cores of bottom sediment from a small coastal lagoon Koyama-ike were examined to find out the environmental changes. KY9301 cored nearly at the center of the lake is 131cm in length. and KY9401 at the east part of the lake is 93cm. Based on the result of analyses on the water content. grain-size. total organic carbon (TOC). total nitrogen and C/N ratio. they were divided into three units. Unit A'. B'. C' in KY9301 and Unit A. B. C in KY9401 in descending order. The Unit A and Unit A' are characterized by high water-conten in spite of the coarser-grained muddy sediment. high TOC and low C/N ratio. From these data, it can be infered that during this stage the primary productivity of the lake was high with decomposition of organic matter not much advanced. In the Unit B and Unit B ' . grain-size is gradually fining upward with decreasing TOC and rather stable C/N ratio. This seems to indicate that the environment was kept in balance between the addition and the decomposition of organic matter. The Unit C and C' show cyclic changes in all analyzed data. The unit may have been repeatedly flooded with the periodic sediments.
主題
Lake Kayama-ike
environmental change
grain size
TOC
C/N ratio
掲載誌名
Laguna : 汽水域研究
2
開始ページ
11
終了ページ
20
ISSN
21852995
発行日
1995-03
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e18449
部局
研究・学術情報機構 エスチュアリー研究センター