Open AccessNumerical Model for Quantifying the Function of Soil Erosion and Sediment Transport Controls at Slope Agricultural Lands
Author(s) -
Apip
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/757/1/012045
Subject(s) - surface runoff , erosion , hydrology (agriculture) , environmental science , rill , soil conservation , sediment , wepp , sediment transport , tillage , erosion control , sediment control , soil water , soil science , geology , agriculture , geomorphology , geotechnical engineering , geography , ecology , archaeology , biology
The objective of this study was to build a numerical model that has the capability to account for the effect of various water and soil conservation practice scenarios in reducing erosion rate and sediment loads along slope cultivated lands. As further, inter-rill and rill erosion were implicitly represented by the raindrop and overland flow soil detachments. The observed surface runoff and sediment concentration data in response to incoming water from the rainfall within selected agricultural river catchments were used to evaluate the performance of spatially distributed, processed-based Hillslope Erosion and Sediment Transport Model (HESTM). As erosion and sediment yield from slope lands are primarily determined by rainfall, surface runoff, topography, vegetative canopy cover, ground surface cover, soil erodibility, and sediment properties. Thus, several scenario-based control strategies according to three clusters of water erosion and sediment control measures had been examined. They are agronomic measures and soil management; field management; and mechanical approach. Accordingly, scenario-based water and soil conservation practices were designed for setup numerical experiments of the model at selected water catchments located in the Upper Citarum and Cimanuk River basins, West Java which dominated by planted seasonal crops (carrot and potato). The study area was discretized into a spatial resolution of 30 x 30 m for considering heterogeneity and control measures function in rainfall-runoff-erosion-sediment process mechanisms.