Effects of Rainfall Intensity, Kinetic Energy and Slope Angle to the Upslope, Downslope, and Lateral Slope Components of Splash Erosion in Hillslope Agriculture: A Case in Badiangan, Ajuy, Iloilo
Year: 2024
Type: article
Abstract: This study was conducted in Barangay Badiangan, Ajuy, Iloilo City, Philippines (11Β°10βN, 122Β°58βE) to determine the effects of rainfall intensity and other rainfall-derived parameters on the directional components of splash erosion in hillslopes. There are five experimental set-ups with slope angles ranging from 0% to 48% were tested under natural rainfall conditions using a modified splash collector. The data collected shows that kinetic energy, slope, and rainfall intensity have shown significant effects on splash erosion. The models obtained using regression analysis are ππππππππ=0.0093(πΎπΎπΎπΎ0.80) and πππ‘ π‘π‘π‘π‘π‘π‘π‘π‘=0.060(πΎπΎπΎπΎ0.107)(ππ0.700)(πΌπΌ200.700) . The model equation performance has been validated using the Standard Error of Estimates with values of 12 and 9.4 for splash detachment and splash transport, respectively. The constants used for kinetic energy in detachment and slope in transport align with the research by Quansah (1981) for sandy soil, which is similar (the characteristics) to the soil at our research site. Additionally, rainfall intensity, especially with a 20-min duration, generated the best model as it yielded the lowest SEE value for all cases.
Institution: Central Philippine University
Language: English
Subfield: Soil Science
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $575
Funder: University of the Philippines
OpenAlex ID: W4402129683