Evaluation of impact by land fill in flood plains in the Mekong River

• Project/Area Number: 15H05218
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Hydraulic engineering
• Research Institution: Tohoku University
• Principal Investigator: So Kazama 東北大学, 工学研究科, 教授 (50272018)
• Co-Investigator(Kenkyū-buntansha): 飯田 俊彰 東京大学, 大学院農学生命科学研究科(農学部), 准教授 (30193139) ; 久保 成隆 東京大学, 大学院農学生命科学研究科(農学部), 教授 (40134506) ; 小森 大輔 東北大学, 環境科学研究科, 准教授 (50622627) ; 増本 隆夫 国立研究開発法人農業・食品産業技術総合研究機構, 農村工学研究部門, 研究領域長 (80165729) ; 吉田 武郎 国立研究開発法人農業・食品産業技術総合研究機構, 農村工学研究部門, 主任研究員 (80414449)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2017: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2015: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: 氾濫原 / 灌漑 / 埋め立て / 肥沃化 / 都市化 / 干拓 / 水質 / 洪水 / 環境

Outline of Final Research Achievements

Landsat images can detect landfill areas in flood plains of the Mekong River. Multiple regression analysis shows correlation coefficient 0.34 using existence or nonexistence as an objective variable and annual maximum water depth, straight distance from central Phnom Penh to landfill area as explanatory variables. Landfill areas by wasted solids have 25 times more total phosphorus and 4 times more COD than those of floodplains. Landfill areas having factories have more iron than that of floodplains. One area has 21 times more than WHO standard of iron. Land use of agriculture can be classified by annual flood duration. NPP with 134kgC/m2 in flood plain will be lost in the case of change from present natural vegetation to agricultural area.

Research Products

• [Journal Article] Modification of DWCM-AgWU Model Applied to a Paddy-dominant Basin with Large Dams (2017)
  • Author(s): Vongphet, Jutithep, Takao Masumoto, Hiroki Minakawa, Ryoji Kudo
  • Journal Title: Irrigation and Drainage Volume: 66 Issue: 1 Pages: 60-70
  • DOI: 10.1002/ird.2013
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] メコン河氾濫原の干拓が流域環境に及ぼす影響評価 (2017)
  • Author(s): 平賀優介，風間聡，峠嘉哉
  • Journal Title: 土木学会論文集B1(水工学) Volume: 73
  • NAID: 130006406195
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] メコン河下流域における洪水氾濫と純一次生産力の関係 (2017)
  • Author(s): 平賀優介，風間聡，峠嘉哉
  • Journal Title: 土木学会論文集B1(水工学) Volume: 73
  • NAID: 130006406229
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Basin-Scale Irrigation Planning in Areas with Scarce Data (2016)
  • Author(s): Masumoto, Takao, Takeo Yoshida, Ryoji Kudo
  • Journal Title: Irrigation and Drainage Volume: 65 Issue: S1 Pages: 22-30
  • DOI: 10.1002/ird.2032
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Water Resources, Floods, and the Agro-Environment of Monsoon Asia: description and future applications of the DWCM-AgWU model (2016)
  • Author(s): Masumoto, Takao
  • Journal Title: NIAES Series “The Challenges of Agro-Environmental Research in Monsoon Asia” Volume: 6 Pages: 205-226
  • Peer Reviewed
• [Journal Article] メコン河の洪水氾濫規模と農業生産性の関係 (2015)
  • Author(s): 天野文子，風間聡
  • Journal Title: 土木学会論文集B1(水工学) Volume: 72
  • NAID: 130005311961
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] メコン河氾濫原における衛星画像を用いた栄養塩分布の推定 (2018)
  • Author(s): 山田慶太郎，風間聡
  • Organizer: 土木学会東北支部技術研究発表会
• [Presentation] メコン河下流域における湿地の干拓が流域環境に与える影響評価 (2017)
  • Author(s): 平賀優介
  • Organizer: 土木学会東北支部
  • Place of Presentation: 東北工業大学，仙台
  • Year and Date: 2017-03-04
• [Presentation] 自然環境適応型灌漑の実態分析～カンボジアのメコン川氾濫原を対象として～ (2017)
  • Author(s): 池園京佳，久保成隆，飯田俊彰，木村匡
  • Organizer: 農業農村工学会講演会
• [Presentation] カンボジアkandal州における地表水ヒ素汚染の実態調査 (2016)
  • Author(s): 佐藤郁
  • Organizer: 水文・水資源学会
  • Place of Presentation: 水文・水資源学会，福島
  • Year and Date: 2016-09-15
• [Presentation] 自然環境適応型灌漑システムの実態分析ーカンボジアのメコン川氾濫原を対象としてー (2016)
  • Author(s): 池園京佳
  • Organizer: 農業農村工学会
  • Place of Presentation: 江陽グランドホテル，仙台
  • Year and Date: 2016-08-31
• [Presentation] Impacts of flooding on Net Primary Productivity in the floodplain being affected by anthropic pressures (2016)
  • Author(s): Yusuke Hiraga
  • Organizer: APD-IAHR
  • Place of Presentation: コロンボ，スリランカ
  • Year and Date: 2016-08-30
  • Int'l Joint Research
• [Presentation] メコン河の洪水氾濫規模と農業生産性の関係 (2016)
  • Author(s): 天野文子
  • Organizer: 水工学講演会
  • Place of Presentation: 東北工業大学（宮城県仙台市）
  • Year and Date: 2016-03-15
• [Presentation] メコン河の洪水氾濫規模と農業生産性の関係 (2015)
  • Author(s): 天野文子
  • Organizer: 水文・水資源学会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2015-09-09
• [Presentation] メコン河下流域における洪水氾濫と純一次生産量 (2015)
  • Author(s): 風間聡
  • Organizer: 水文・水資源学会
  • Place of Presentation: 首都大学東京（東京都八王子市）
  • Year and Date: 2015-09-09
• [Presentation] Relationship between flooding and Net Primary Productivity in the downstream basin of the Mekong River (2015)
  • Author(s): Yusuke Hiraga
  • Organizer: IUGG
  • Place of Presentation: Prague(Czech)
  • Year and Date: 2015-06-25
  • Int'l Joint Research
• [Remarks] 水環境システム学研究室
  • URL: http://kaigan.civil.tohoku.ac.jp/
• [Remarks] 水環境システム学研究室
  • URL: http://kaigan.civil.tohoku.ac.jp/kaigan/index.html