Studies on the Function of Wetland and Shallow Aquatic Ecosystems for Environmental Conservation

湿地和浅水生态系统环境保护功能研究

• 批准号: 07680603
• 负责人: TERAI Hisayoshi
• 金额: $ 1.47万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07680603/
• 关键词: SHALLOW AQUATIC ECOSYSTEM; WETLAND; MITIGATION; ENVIRONMENTAL CONSERVATION; RAIN COMPONENT; NUTRIENT; NITROGEN OXIDE; SULFUR OXIDE

From 2 years' study to estimate the function of wetland and shallow water ecosystem for environmental conservation, the following results were obtained.(1) In order to estimate the effect of rainfall on a shallow aquatic ecosystem in the urban area, rain samples were collected and analyzed at Nagoya University during 1995, and the data were compared with those of Nagoya city during recent 10 years. The result showed recent trend in decreasing sulfur and increasing nitrogen compound in the rain component, which indicated that rain might be eutrophication agent on the oligotrophic ecosystem.(2) In order to elucidate the characteristics of shallow aquatic ecosystem in the sulfur and nitrogen cycling, filed studies concerning on the sulfur and nitrogen budget, microbial activities on the degradation of organic matter, and the denitrifying bacterial flora were carried out at a small pond and its surrounding wetland area in Nagoya city suburb. The result showed that wetland had large bufferi … More ng function against higher concentration of sulfate inflow and nitrogen supply through precipitation.(3) In order to estimate the effect of nutrient supply through precipitation on oligotrophic wetland, field studies on the nitrogen cycling microbial flora were carried out in parallel with flux measurement of methane, nitrous oxide and hydrogen at Kushiro wetland. The result showed that sulfur supply through precipitation was crucial for ombrotrophic bog, where sulfate was completely depleted in summer. As for the nitrogen component, the fact that free-living nitrogen fixing bacteria appeared abundant in bog (high moor) but not detected in fen (low moor) indicated the nutrient level of nitrogen in the environment.(4) The shallow aquatic ecosystem plays an important mitigating role for nutrient loading on the lower watershed agaist eventual inflow or loading of nutrients by precipitation. Wetland or shallow aquatic system should be managed properly for the total environmental conservation. Less

通过2年的研究，对湿地和浅水生态系统的环境保护功能进行了评价，得出以下结论：(1)为了评价降雨对城市浅水生态系统的影响，1995年在名古屋大学收集了降雨样品并进行了分析，并与名古屋市近10年的数据进行了比较。结果表明，近年来雨水中硫含量呈下降趋势，氮含量呈上升趋势，雨水可能是贫营养生态系统的富营养化因子。(2)为了阐明浅水生态系统硫氮循环的特征，在名古屋市郊的一个小池塘及其周围湿地进行了硫氮收支、微生物对有机物降解的影响以及分解细菌植物群的野外研究。结果表明，该湿地具有较大的缓冲区， ...更多信息 ng对高浓度硫酸盐入流和降水供氮有抑制作用。(3)为评价降水营养补给对贫营养湿地的影响，在实地调查钏路湿地氮循环微生物植物群的同时，测定了甲烷、氧化亚氮和氢气的通量。结果表明，夏季硫酸盐完全耗尽的富营养化沼泽，通过降水提供的硫是至关重要的。在氮组分方面，沼泽（高摩尔）中出现大量自生固氮菌，而沼泽（低摩尔）中未检测到自生固氮菌，这一事实表明环境中氮的营养水平。(4)浅水生态系统对下游流域的营养盐负荷起着重要的缓解作用。湿地或浅水系统应妥善管理，以达到整体环境保育的目的。少

项目成果

寺井久慈: "緒言-地球環境の緊迫性と地域環境化学" 地球化学. 29. 63-66 (1995)

Kuji Terai：“引言 - 全球环境和区域环境化学的紧迫性”地球化学 29. 63-66 (1995)。

TERAI,H.: "The fluxes of methane, nitrous oxide and hydrogen gases and microbial processes in Kushiro wetland in northern Japan. (Kushiro International Wetland Center)" Proceedings of 7th IMCG Symposium in Hokkaido, Japan'96. (in press).

TERAI,H.：“日本北部钏路湿地的甲烷、一氧化二氮和氢气的通量以及微生物过程。（钏路国际湿地中心）”96 年日本北海道第七届 IMCG 研讨会论文集。

寺井久慈: "松本聡編「微生物のガス代謝と地球環境」分担執筆" 学会出版センター, 168 (1995)

Kuji Terai：“松本聪编辑的《微生物气体代谢与全球环境》的合著者，学会出版中心，168（1995）

H.Terai et al.: "The fluxes of methane,nitrous oxide and hydrogen gases and microbial processes in Kushiro Wetland in northern Japan." Proceedings of 7th IMCG Symposium in Hokkaido,Japan '96 (Kushiro International Wetland Center). (in Press).

H.Terai 等人：“日本北部钏路湿地的甲烷、一氧化二氮和氢气的通量以及微生物过程。”