Performances of Erosion Control Blanket Made From Palm Fiber On Reducing Erosion In The Slopes Of Lake Limboto Basin

¹ Universitas Negeri Gorontalo, Physics Department, 96554 Gorontalo, Indonesia
² Universitas Negeri Gorontalo, Geology Engineering Department, 96554 Gorontalo, Indonesia
³ National research and Innovation Agency, Research Center for Environmental and Clean Technology, Building 820 Geostech, B.J. Habibie Science and Technology Center, South Tanggerang City 15314, Banten, Indonesia
⁴ Universitas Negeri Gorontalo, Physics Department, 96554 Gorontalo, Indonesia
⁵ Research Institute for Humanity and Nature, SRIREP, 457-4 Kamigamo Motoyama, Kita-ku, Kyōto-shi, Kyōto-fu 603-80479, Japan
⁶ Ehime University, Graduate School of Science and Engineering, Matsuyama 790-8577, Japan

^* Corresponding author: yayu_arifin@ung.ac.id

Abstract

Lake Limboto is one of the key lakes with severe siltation, caused by sediment delivered by river currents. This study aims to reduce the impact of sedimentation by controlling erosion with a palm fiber net with mesh dimensions of 5 cm x 5 cm and a thickness of 5 mm. The Palm fibre installation is installed on slopes with erosion potential; each location has a different slope: location 1 has a slope of 40o, location 2 has a slope of 45°, and location 3 has a slope of 50°. With the findings obtained, palm fiber nets erosion control was shown to be effective in repelling erosion. The first site has an 8:3 ratio, the second location has a 5:2 ratio, and the third place has a 1:0.5 ratio, net performance at each location of 42% location 1, 39% location 2, 41% location 3 and 0% at location 4. Differences in soil structure and slope of the slope generate variations in the data acquired from each location.