森林域における物質循環特性の渓流水質に及ぼす影響

• 平田 健正

  社団法人 土木学会 国立公害研究所 水質土壌環境部

• 村岡 浩爾

  社団法人 土木学会 国立公害研究所 水質土壌環境部

書誌事項

タイトル別名

• EFFECT OF ELEMENT CYCLE ON STREAMWATER CHEMISTRY IN FORESTED BASIN
• シンリンイキ ニ オケル ブッシツ ジュンカン トクセイ ノ ケイリュウ スイ

抄録

Two types of the chemical changes of streamwater during storm runoff were found: Type I which recovers approximately the same concentration in the recession limb as the baseflow level prior to the runoff event; Type II which overshoots the baseflow level. Main solute belonging to Type I is SiO₂, and that to Type II is NO₃^--N.<br>To relate the element cycle in forest ecosystem to the streamwater chemistry, element content in forest soil was analyzed. This proves that silicon content in forest surface soil is somewhat lower than in deeper soil, while nitrogen becomes greatly enriched in surface soil. Besides, the difference between element contents in soil makes a change of vertical soilwater chemistry in SiO₂ and NO₃^--N concentrations, and consequently generates the chemical changes of streamwater through soilwater leaching.

収録刊行物

• 土木学会論文集

  土木学会論文集 1988 (399), 131-140, 1988-11-20

  公益社団法人 土木学会

キーワード

• storm runoff
• streamwater chemistry
• soilwater chemistry
• element content in soil
• forest ecosystem

詳細情報

• CRID: 1390282680578003200
• NII論文ID: 40004506109
• NII論文ID: 130003980886
• NII論文ID: 10003195602
• NII書誌ID: AN10014020
• DOI: 10.2208/jscej.1988.399_131
• ISSN: 18827187
• ISSN: 02897806
• NDL書誌ID: 3203818
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3203818
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1988/399/1988_399_131/_pdf
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