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Onsite survey of plastic pollution in mangrove ecosystem based on digital image analysis and impact assessment

Research Project

Project/Area Number 20KK0247
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 64:Environmental conservation measure and related fields
Research InstitutionChuo University (2022-2023)
The University of Tokyo (2020-2021)

Principal Investigator

Furumai Hiroaki  中央大学, 研究開発機構, 機構教授 (40173546)

Co-Investigator(Kenkyū-buntansha) 西川 可穂子  中央大学, 商学部, 教授 (20345416)
二瓶 泰雄  東京理科大学, 創域理工学部社会基盤工学科, 教授 (60262268)
比嘉 紘士  横浜国立大学, 大学院都市イノベーション研究院, 准教授 (60770708)
Project Period (FY) 2020-10-27 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2023: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords海洋プラスチック / 東南アジア / マングローブ干潟域 / 画像解析 / 干潟生息生物 / 微量有機汚染物質 / マングローブ林 / 二枚貝 / 微量汚染物質 / AI画像解析 / 海洋プラスチック汚染
Outline of Research at the Start

プラスチックゴミ問題を抱えるマレーシアの沿岸域におけるマングローブ林に焦点を当てて、プラスチックゴミの主発生源となる市街地から流出、河川を通じた流下と流下過程での変換、マングローブへの輸送・蓄積、マイクロプラスチック(MPs)による毒性影響評価に関する研究を実施する。その際、定点観測カメラやUAV空撮による画像に加えて衛星画像を取得して、プラスチックごみの輸送や存在状況を把握するモニタリング技術の開発を試みる。また、マングローブ生態系における二枚貝の環境浄化機能、MPs付着の薬剤耐性細菌群集解析,MPs汚染による毒性影響評価、太陽光を利用する光触媒作用による効果的な環境修復処理技術も検討する。

Outline of Final Research Achievements

It is estimated that plastic waste, which is transported from land to the ocean through rivers, is mostly distributed in the coastal waters and oceans around Southeast Asia. Therefore, we focused on plastic pollution in mangrove forests unique to tropical regions, which are important for maintaining biodiversity. A method for detecting plastic waste using image information of near-infrared reflectance, which leads to understanding the actual state of plastic pollution was developed. In addition, through field surveys of microplastics (MPs) in mangrove tidal flats, we investigated the effects of MPs on coastal ecosystems and the antibiotic resistance of bacteria in litter-adhering biofilms. Furthermore, researchers from Japan and Southeast Asia conducted joint research, including the development of environmental remediation technologies such as the fragmentation and aging of MPs using advanced oxidation process.

Academic Significance and Societal Importance of the Research Achievements

可視域と近赤外域の画像情報を活用したプラスチックごみの検出手法を開発した。また、マングローブ干潟域調査から、堆積物には海水中より非常に多くMPsが蓄積していること、細かいサイズや断片やフィルムの形状のMPsが多く堆積していること、そして、堆積物から摂餌する生息生物のMPs蓄積量、ごみ付着生物膜内細菌の薬剤耐性を明らかとした。また、H2O2存在下の促進酸化処理におけるOHラジカル生成によりMPsの断片化や劣化が進むことを明らかにした。これらの成果は、熱帯地域の貴重な生態系であるマングローブ干潟域の汚染やごみ輸送の実態把握、干潟域の保全や汚染対策の提案につながる科学的知見を提供するものである。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (44 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (8 results) Journal Article (11 results) (of which Peer Reviewed: 10 results,  Open Access: 6 results) Presentation (23 results) (of which Int'l Joint Research: 12 results,  Invited: 3 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Universiti Malaya(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Unidersiti Malaya(マレーシア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Unidersiti Malaya(マレーシア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Universiti Malaya(マレーシア)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Mineralization characteristics and behavior of polyethylene microplastics through ozone-based treatment2024

    • Author(s)
      Hu Jinyuan、Hu Jiangyong
    • Journal Title

      Chemosphere

      Volume: 349 Pages: 140839-140839

    • DOI

      10.1016/j.chemosphere.2023.140839

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison of concentration, shape, and polymer composition between microplastics and mesoplastics in Japanese river waters2024

    • Author(s)
      Nihei Yasuo、Ota Hiro、Tanaka Mamoru、Kataoka Tomoya、Kashiwada Jin
    • Journal Title

      Water Research

      Volume: 249 Pages: 120979-120979

    • DOI

      10.1016/j.watres.2023.120979

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] What samples are suitable for monitoring antimicrobial-resistant genes? Using NGS technology, a comparison between eDNA and mrDNA analysis from environmental water2023

    • Author(s)
      Takeda-Nishikawa Kahoko、Palanichamy Rajaguru、Miyazato Naoki、Suzuki Takayoshi
    • Journal Title

      Frontiers in Microbiology

      Volume: 14 Pages: 01-11

    • DOI

      10.3389/fmicb.2023.954783

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ozonation facilitates the aging and mineralization of polyethylene microplastics from water: Behavior, mechanisms, and pathways2023

    • Author(s)
      Hu Jinyuan、Lim Fang Yee、Hu Jiangyong
    • Journal Title

      Science of The Total Environment

      Volume: 866 Pages: 161290-161290

    • DOI

      10.1016/j.scitotenv.2022.161290

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characteristics and behaviors of microplastics undergoing photoaging and Advanced Oxidation Processes (AOPs) initiated aging2023

    • Author(s)
      Hu Jinyuan、Lim Fang Yee、Hu Jiangyong
    • Journal Title

      Water Research

      Volume: 232 Pages: 119628-119628

    • DOI

      10.1016/j.watres.2023.119628

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] 河川におけるマイクロプラスチック汚染の現状と課題2022

    • Author(s)
      二瓶泰雄
    • Journal Title

      マテリアルライフ学会誌

      Volume: 34 Pages: 36-41

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Comparative Analysis of Plastic Pieces in Basin, River and Coast: Case Study in the Hikiji River Basin, Kanagawa Prefecture2022

    • Author(s)
      三島聡子・小澤憲司・中山駿一・菊池宏海・難波あゆみ・片岡智哉・二瓶泰雄
    • Journal Title

      Journal of Japan Society on Water Environment

      Volume: 45 Issue: 1 Pages: 11-19

    • DOI

      10.2965/jswe.45.11

    • NAID

      130008140258

    • ISSN
      0916-8958, 1881-3690
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] EVALUATION OF AREA AND TYPES OF FLOATING MACROPLASTICS IN RIVERS DUE TO DEEP LEARNING2021

    • Author(s)
      太田洸,片岡智哉,吉田拓司,二瓶泰雄
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 77 Issue: 2 Pages: I_901-I_906

    • DOI

      10.2208/jscejhe.77.2_I_901

    • NAID

      130008160212

    • ISSN
      2185-467X
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] COMPARISON OF ANTHROPOGENIC DEBRIS FLUX IN VARIOUS FLOODS WITH CONTINIOUS MONITORING OF IP CAMERA AND IMAGE ANALYSIS2021

    • Author(s)
      吉田拓司,藤山朋樹,片岡智哉,緒方陸,二瓶泰雄
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 77 Issue: 2 Pages: I_1003-I_1008

    • DOI

      10.2208/jscejhe.77.2_I_1003

    • NAID

      130008160062

    • ISSN
      2185-467X
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Current Status and Issues of Microplastic Pollution Research2021

    • Author(s)
      大塚佳臣,高田秀重, 二瓶泰雄, 亀田豊,西川可穂子
    • Journal Title

      Journal of Japan Society on Water Environment

      Volume: 44 Issue: 2 Pages: 35-42

    • DOI

      10.2965/jswe.44.35

    • NAID

      130007996557

    • ISSN
      0916-8958, 1881-3690
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 河川から考える海洋プラスチックごみ・マイクロプラスチック対策 (特集 物質循環のための使用済みプラスチックの再資源化)2021

    • Author(s)
      片岡智哉,二瓶泰雄
    • Journal Title

      化学工学

      Volume: Vol.85,No.3 Pages: 174-177

    • NAID

      40022511902

    • Related Report
      2020 Research-status Report
  • [Presentation] Microplastic distribution within the tidal zone of mangrove ecosystem: A case study of Port Klang, Selangor.2024

    • Author(s)
      Fauziah S.H.
    • Organizer
      2nd International Symposium on Plastic Pollution in Asian Waters - From land to the ocean
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Aging and Mineralization Characteristics and Behavior of Microplastics in Water via AOP Processes2024

    • Author(s)
      Hu Jiangyong
    • Organizer
      2nd International Symposium on Plastic Pollution in Asian Waters - From land to the ocean
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microplastics Contamination in Mangrove Sediment: A case study of pollution uptake by selected animals2023

    • Author(s)
      Fauziah S.H
    • Organizer
      the 20th International Congress of Soil Science, 20-22 February 2024, Rawalpindi, Pakistan.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microplastic abundance in blood cockles (Anadara granosa) purchased from selected local markets in Peninsular Malaysia2023

    • Author(s)
      Priya, M
    • Organizer
      the International Young Scientist Symposium 2023, 22- 24 August 2023, Universiti Malaya, Malaysia.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microplastic distribution based on tidal zone in surface seawater and sediment sample at Port Klang, Selangor2023

    • Author(s)
      Yeoh Wei Wang
    • Organizer
      the BioSymposium 2023, Universiti Malaya 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microplastic abundance in cockle, shrimp, crab and amphibious fish at Port Klang, Selangor2023

    • Author(s)
      Chiang Han Teck
    • Organizer
      the BioSymposium 2023, Universiti Malaya 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microbial profiling of biofilm on selected marine plastics2023

    • Author(s)
      Zhao Ziyi,
    • Organizer
      the BioSymposium 2023, Universiti Malaya 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microplastic contamination of commercially purchased blood cockles (Anadara granosa) from local markets in selected states of Peninsular Malaysia2023

    • Author(s)
      Priya, M.
    • Organizer
      3R International Scientific Conference on Material Cycles and Waste Management, 13-17 March 2023, Kyoto University, Japan.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microplastic contamination in selected Malaysian mangroves: prevalence, distribution, and characteristics2023

    • Author(s)
      Fauziah Shahul Hamid et al
    • Organizer
      The 3R International Scientific Conference on Material Cycles and Waste Management
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Microplastic contamination of commercially purchased blood cockles (Anadara granosa) from local markets in selected states of Peninsular Malaysia2023

    • Author(s)
      Priya Mohan, Fauziah Shahul Hamid, Kahoko Nishikawa
    • Organizer
      The 3R International Scientific Conference on Material Cycles and Waste Management
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] A study on understanding the spatio-temporal behavior of plastic waste in river basins using small satellites and trail cameras2022

    • Author(s)
      Sho Morimoto, Hiroto Higa, Salem Ibrahim Salem
    • Organizer
      10th AWOC / 19th KJWOC
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 川から見るマイクロプラスチック汚染2022

    • Author(s)
      二瓶泰雄
    • Organizer
      第25回日本水環境学会シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 日本全国におけるマイクロ・メソプラスチック濃度とサイズ,形状,材質について2022

    • Author(s)
      太田洸,田中衛,片岡智哉,二瓶泰雄
    • Organizer
      土木学会第76回年次学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Study of Riverine Litter: Composition and generation2022

    • Author(s)
      Kahoko Nishikawa
    • Organizer
      APEC webinar and Focus Group discussion ”Marine Debris Management and Monitoring from Source as River is the Major Transport Pathway”
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoaging of microplastics under UV irradiations: characteristics and behaviors2022

    • Author(s)
      Jinyuan Hu, Jiangyong Hu
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] Microplastic abundance and distribution on the seafloor of selected beaches in Perhentian islands, Terengganu, Malaysia2022

    • Author(s)
      Fauziah binti Shahul Hamid, Lim Y.W., Agamuthu P.
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] Ozonation facilitated aging of polyethylene microplastics from water2022

    • Author(s)
      Jinyuan Hu, Jiangyong Hu
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] A Monitoring method for plastic garbage in coastal lines by small satellites2022

    • Author(s)
      Hiroto Higa, Reika Akitomo, Yuji Sakuno
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] Detection of plastic litter on city streets using Near-infrared, red and green imagery captured by a digital camera2022

    • Author(s)
      Naoki Furuya, Hiroaki Furumai
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] Survey of microplastic pollution in the Tama river2022

    • Author(s)
      Kahoko Nishikawa, Hirokazu Niimi, Taku Matsutani, Sota Inagaki
    • Organizer
      Plastic Pollution in Asian Waters - from Land to Ocean (PPAW2022)
    • Related Report
      2021 Research-status Report
  • [Presentation] 河川マクロプラスチック面積算出・種類判別に向けた深層学習の適用2021

    • Author(s)
      太田洸,片岡智哉,二瓶泰雄
    • Organizer
      土木学会第76回年次学術講演会講演概要集
    • Related Report
      2021 Research-status Report
  • [Presentation] 河川マクロプラスチック面積・種類判別への深層学習の適用2021

    • Author(s)
      太田洸,吉田拓司,片岡智哉,二瓶泰雄
    • Organizer
      第24回日本水環境学会シンポジウム講演集
    • Related Report
      2021 Research-status Report
  • [Presentation] IPカメラ連続観測と画像解析手法に基づく複数出水時の河川人工系ごみ輸送特性2021

    • Author(s)
      吉田拓司,緒方陸,藤山朋樹,片岡智哉,二瓶泰雄
    • Organizer
      第24回日本水環境学会シンポジウム講演集
    • Related Report
      2021 Research-status Report
  • [Remarks] 画像解析によるマングローブ水域おけるプラスチック汚染実態把握と生態系への影響評価研究

    • URL

      https://www.env-u-tokyo.jp/research/2020-mangrove/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Funded Workshop] 2nd International Symposium on Plastic Pollution in Asian Waters - From land to the ocean2024

    • Related Report
      2023 Annual Research Report

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Published: 2020-10-29   Modified: 2025-01-30  

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