2009 Fiscal Year Final Research Report
Ecological functional assessment of reed beds based on hydrogromorphic characteristics of wetlands
| Project/Area Number |
18510026
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | National Institute for Environmental Studies |
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Principal Investigator |
YABE Tohru National Institute for Environmental Studies, 生物圏環境研究領域, 研究員 (50300851)
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| Co-Investigator(Kenkyū-buntansha) |
ISHII Yuichi 独立行政法人国立環境研究所, 生物圏環境研究領域, NIESポスドクフェロー (80551027)
AMANO Yoshimasa 千葉大学, 工学部, 助教 (40517976)
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| Project Period (FY) |
2006 – 2009
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| Keywords | ヨシ原 / 沿岸微地形 / HGMアプローチ / 水位 / 栄養塩環境 |
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| Research Abstract |
The field survey in the coastal wetland of Lake Kasumigaura and the experimental farm of NIES (National Institute for Environmental Studies) for the verification that the microtopographic features of the coastal wetlands, such as ground levels and the arrangement of fairways in the wetland, have large influences on the water and nutrients supply to the reed beds, and the geomorphic features of the coastal wetlands, such as cape or bay, have a large influence on the disturbance strength to the wetlands and the decision of reed bed size in the present lake coastal ecosystems, which the water level is controlled artificially. As a result, (I) lake water is mainly supplied into the reed bed by the overflow from the littoral water. (II) Phragmites plants grew rapidly in the habitat where is supplied high-nutrient water, by the overflow at the lake sides and the fairway sides. (III) Phragmites plants grew larger in the flood condition than at the emergent as long as there is no physical disturbance, and another species in the flood is fewer, therefore the beds can form the more dense and pure population. (IV) In the geographical scale of 4km or more, the shelter effects of the bay regulate the coastal vegetation size. Therefore, it was considered that the hydrogeomorphic classification based on the microtopographic and geomorphic features of coastal wetlands was effective for Phragmites plants growth and the assessment of the reed beds.
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[Presentation] 霞ヶ浦(西浦・北浦)100地点調査-その1.底質性状とその分布2009
Author(s)
石井裕一, 中里亮治, 元木努, 位田俊臣, 小松伸行, 小田切敬子, 塚本威, 山本麻美子, 三好久美子, 根岸正美, 長谷川恒行, 石川俊行, 矢部徹
Organizer
日本陸水学会第74回大会
Place of Presentation
大分
Year and Date
20090915-20090916
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