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Poyang Lake is continuously shrinking and losing its function on account of deforestation and reclamation, causing water quality deterioration, frequent floods and ecological damages that impede economic growth. The research mainly analyzes the cause of Poyang Lake reclamation, its development, and pros and cons through historical literatures. The fact is found from 13th -19th centuries that farmers individually reclaimed the lake had caused external uneconomic problems. It not only negatively impacted local ecology but resulted in economic burden to the local government, who originally considered that the reclamation could bring in tax increases; however, the local financial resources are not sufficient to resolve existing problems. Under the contradictions among economic development, ecological protection, individual benefits and the overall security, the problems will continuously exist. The results of this research give an overall introduction concerning Poyang Lake in China. By illustrating the causes and impacts of reclamation and governances for lake, a relation among a specific political system, economic growth, ecological changes and policies can be demonstrated and underlying factors of flood disaster in China can be summarized.

付記する学位プログラム名: グローバル生存学大学院連携プログラム / 京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第21735号 / 工博第4552号 / 新制||工||1710(附属図書館) / 京都大学大学院工学研究科社会基盤工学専攻 / (主査)教授 堀 智晴, 教授 寶 馨, 准教授 佐山 敬洋, 教授 立川 康人 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DGAM

Abstract Flood disasters have been a challenge in Liberia for the past 15 years. The result has been hardship for residents, which has created major disruptions to social and economic services. Global warming, poor environmental conditions and weak disaster management policies among other factors are largely blamed for the floods. The conceptual framework for this study was Barton's collective stress theory and Edwards' varied response theory, which guided this exploration of how flood victims perceive the effectiveness of the Liberian government's flood disaster management strategies. A total of 25 participants were recruited for this grounded theory study. Twenty participants were victims of flooding and 5 participants were managers from government and non-governmental organizations (NGO) entities. Data were collected from open-ended semistructured interviews with the participants. Multiple sources such as individuals and group interviews, field notes were used to support the study. Data analysis utilized descriptive coding. Results suggest community and government needs include: (a) policies on zonal regulations to reduce the problem of flooded drainages, (b) funding and other support for disaster emergency management institutions, (c) decentralizing and empowering local government agencies for disaster emergency management, and (d) empowering communities themselves through funding and training to become the first line of defense when floods occur. This dissertation may support positive social change by highlighting the need for government to strengthen disaster management policies to include zoning and building permit regulations, funding for disaster emergency management institutions, and flood control.

Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(工学) / 甲第15354号 / 工博第3233号 / 新制||工||1486(附属図書館) / 27832 / 京都大学大学院工学研究科都市社会工学専攻 / (主査)教授 岡田 憲夫, 教授 戸田 圭一, 教授 多々納 裕一 / 学位規則第4条第1項該当

京都大学 / 0048 / 新制・論文博士 / 博士(工学) / 乙第12832号 / 論工博第4102号 / 新制||工||1600(附属図書館) / 31370 / (主査)教授 角 哲也, 教授 堀 智晴, 教授 田中 茂信 / 学位規則第4条第2項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM