Comparison of Atmospheric Deposition and Substance Budget at the two Small Catchment of Tokyo and Beijing Suburbs 

作成者 Feng, Yanwen, Ogula, Norio, Feng, Zongwei
日本十進分類法 (NDC) 519
内容 研究概要:Information on air pollution, effects of air pollution and acid deposition on forest and soil, element budget have been investigated from May 1995 to May 1996 in Beijing suburban catchment (Shisanling) and Tokyo suburban catchment (Hakyuti). The pH annual average value of rainfall was 6.7 at Shisanling and 4.7 at Hakyuti. Air pollution at Shisanling was classified to sulfuric acid type and nitrate acid type at Hakyuti. Concerning material budget at the two small catchments, sodium and magnesium outputs were large than their atmospheric inputs, so sodium and magnesium leached from the two catchments. Other ions (SO_4^<2->, F^-, NO_3^-, Cl^-, K^+, Ca^<2+>, NH_4^+) have been accumulated at Shisanling and Hakyuti. Discharge and accumulation of all elements (except NO_3^-) in Shisanling were larger than those at Hakyuti. That is because discharge and accumulation depended on deposition. Deposition at Shisanling was larger than that at Hakyuti. On the other hand, Fluoride was remarkably different between Shisanling and Hakyuti, 810f the input was accumulated at Shisanling and 11027777735440f the input was discharged at Hakyuti.
コンテンツの種類 研究報告書 Research Paper
掲載誌情報 Proceedings of the international symposium on hydro-environment in Asia page.239-244 (1997)
言語 英語

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