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タイトルヨミ
ナカウミ オヨビ ハマナコ ヒョウソウ タイセキブツ ノ ユウキ タンソ チッソ イオウ ノウド ブンプ
日本語以外のタイトル
Distribution of Organic Carbon, Nitrogen and Sulfer Contents in Surface Sediments of Brackish Coastal LakesNakaumi and Hamana, Japan
ファイル
言語
日本語
著者
倉門 由紀子
髙安 克已
徳岡 隆夫
井内 美郎
内容記述(抄録等)
To clarify relationships between the oxic-anoxic environments on the bottoms of the brackish coastal lake and the effect of the tidal current,the distributions of total organic carbon(TOC), total nitrogen(TN) and total sulfur(TS) contents have been investigated in the surface sediments of Lakes Nakaumi and Hamana. Cored sediments in Lake Nakaumi were obtained at 83 stations. And surface sediment samples in Lake Hamana were obtained at 40 stations. Top 1cm of the sediments from the two lakes were analyzed using a CHNS elemental analyzer. TOC contents of Lakes Nakaumi and Hamana ranged within 0.14-4.40% and 0.01-4.94%, respectively. TN contents ranged within 0.05-0.65% in Lake Nakaumi and 0.02-0.53% in Lake Hamana, and TS contents ranged within 0.09-5.42% and 0.05-3.11%, respectively. C/N ratios showed about 7-8 at most area of the two lakes. C/S ratios showed 1.0-1.5 in Lake Nakaumi and 1.5-2.0 in Lake Hamana, respectively. TOC, TN and TS contents showed lower values and C/S ratios showed higher values near mouths of the both lakes. With increace in the distance from the mouth, TOC, TN and TS contents increased and C/S ratios decreased. In addition, C/S ratios in Lake Nakaumi are generally lower than that in Lake Hamana. These suggest that the areas near the mouth of lake have more oxic bottom environments, and the bottom of Lake Nakaumi is more anoxic than that of Lake Hamana. This is probably related with the tidal effect.
主題
Lake Nakaumi
Lake Hamana
TOC・TN・TS contents
oxic-anoxic environments
tidal current
掲載誌名
Laguna : 汽水域研究
5
開始ページ
123
終了ページ
135
ISSN
21852995
発行日
1998-03
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
部局
研究・学術情報本部 エスチュアリー研究センター
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