Studies on assessment for wetland ecosystem functions using environmental radio isotope

2014 Fiscal Year Final Research Report

• Project/Area Number: 24310025
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental impact assessment/Environmental policy
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: NOHARA Seiichi 独立行政法人国立環境研究所, 生物・生態系環境研究センター, 室長 (60180767)
• Co-Investigator(Renkei-kenkyūsha): SENNGA Yukiko 東邦大学, 理学部化学科地球化学教室, 講師 (30434210)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 環境放射性物質 / 放射性セシウム / 湿地生態系 / 環境影響評価 / 空間線量 / 湖沼底質

Outline of Final Research Achievements

Studies on effect of environmental radionuclide were conducted in high pollution wetland such as river wetland in North Fukushima prefecture and low pollution wetland such as Lake Kasumigaura, Lake Hinuma, Ozegahara Mire and Kushiro mire. In those wetland in region richly endowed with nature, monitoring study of cumulative dose and transition rate of environmental radionuclide were conducted. Ecosystem functions were researched and analyzed on wetland ecosystem for purposes of evaluation approach of environmental radionuclide assessment. The water and material recycling and dynamic process of environmental radionuclide were observed in protected area and catchment basin using stable isotope analysis and ICP analysis of water. The environmental radioactivity in the lake bottom sediment and wetland plants were evaluated in several site. The organic supply and organic matter decomposition in sediment were influenced by temperature and oxygen content.

Free Research Field

湿地生態学