Planning and analysis of low-cost erosion control measures using local materials for developing countries

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450200
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Hirosaki University
• Principal Investigator: Higaki Daisuke 弘前大学, 農学生命科学部, 教授 (10302019)
• Co-Investigator(Kenkyū-buntansha): YAGI Hiroshi 山形大学, 地域教育文化学部, 教授 (40292403) ; IRASAWA Michiya 山形大学, 農学部, 教授 (40343024) ; KOIWA Naoto 弘前大学, 教育学部, 教授 (70296002)
• Research Collaborator: KASDAI Mio ; GHIMIRE SOHAN ; AMATYA S. C. ; BHATTARAI T. P. ; KARKI K. K.
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 土砂災害対策 / 低コスト / 発展途上国 / ガリー侵食 / 河岸侵食 / ネパール

Outline of Final Research Achievements

We examined sustainable low-cost measures to control erosion of gully and riverbanks through the on-site evaluation of models site works adopted by the JICA water-induced disaster prevention projects of 15-20 years ago in Nepal. Gabion check dams and bamboo plantation in combination with plantation of useful grass on barren slopes have been well protecting the devastated lands from gully erosion in the Midland. Embankments keeping the original width of the river can have stabilized the previous riverbed level, thus promoting an increase in population around the river. It is also notable that community-based land management and execution of preventive works including reforestation is essential for effectiveness of adopted hardware measures.

Free Research Field

砂防学、応用地形学